Synthesis of Defect Perovskites (He2–x⟂x)(CaZr)F6 by Inserting Helium into the Negative Thermal Expansion Material CaZrF6

Hester, Brett R.; dos Santos, António M.; Molaison, Jamie J.; Hancock, Justin C.; Wilkinson, Angus P.

doi:10.1021/jacs.7b07860

Title: Synthesis of Defect Perovskites (He_2–x⟂_x)(CaZr)F₆ by Inserting Helium into the Negative Thermal Expansion Material CaZrF₆

Abstract

Defect perovskites (He_2–x⟂_x)(CaZr)F₆ can be prepared by inserting helium into CaZrF₆ at high pressure. They can be recovered to ambient pressure at low temperature. There are no prior examples of perovskites with noble gases on the A-sites. The insertion of helium gas into CaZrF₆ both elastically stiffens the material and reduces the magnitude of its negative thermal expansion. It also suppresses the onset of structural disorder, which is seen on compression in other media. Measurements of the gas released on warming to room temperature and Rietveld analyses of neutron diffraction data at low temperature indicate that exposure to helium gas at 500 MPa leads to a stoichiometry close to (He₁⟂₁)(CaZr)F₆. Helium has a much higher solubility in CaZrF₆ than silica glass or crystobalite. An analogue with composition (H₂)₂(CaZr)F₆ would have a volumetric hydrogen storage capacity greater than current US DOE targets. We anticipate that other hybrid perovskites with small neutral molecules on the A-site can also be prepared and that they will display a rich structural chemistry.

Authors:

Hester, Brett R. ^[1]; dos Santos, António M. ^[2]; Molaison, Jamie J. ^[2]; Hancock, Justin C. ^[1];

^[1]

Georgia Inst. of Technology, Atlanta, GA (United States)
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

Publication Date:: Mon Sep 11 00:00:00 EDT 2017

Research Org.:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

Sponsoring Org.:: USDOE Office of Science (SC)

OSTI Identifier:: 1399917

Grant/Contract Number:: AC05-00OR22725

Resource Type:: Accepted Manuscript

Journal Name:: Journal of the American Chemical Society

Additional Journal Information:: Journal Volume: 139; Journal Issue: 38; Journal ID: ISSN 0002-7863

Publisher:: American Chemical Society (ACS)

Country of Publication:: United States

Language:: English

Subject:: 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Citation Formats


                    Hester, Brett R., dos Santos, António M., Molaison, Jamie J., Hancock, Justin C., and Wilkinson, Angus P. Synthesis of Defect Perovskites (He2–x⟂x)(CaZr)F6 by Inserting Helium into the Negative Thermal Expansion Material CaZrF6.  United States: N. p., 2017. 
Web.  doi:10.1021/jacs.7b07860.

Copy to clipboard


                    Hester, Brett R., dos Santos, António M., Molaison, Jamie J., Hancock, Justin C., & Wilkinson, Angus P. Synthesis of Defect Perovskites (He2–x⟂x)(CaZr)F6 by Inserting Helium into the Negative Thermal Expansion Material CaZrF6.  United States.  https://doi.org/10.1021/jacs.7b07860

Copy to clipboard


                    Hester, Brett R., dos Santos, António M., Molaison, Jamie J., Hancock, Justin C., and Wilkinson, Angus P. Mon .  
"Synthesis of Defect Perovskites (He2–x⟂x)(CaZr)F6 by Inserting Helium into the Negative Thermal Expansion Material CaZrF6".  United States.  https://doi.org/10.1021/jacs.7b07860.  https://www.osti.gov/servlets/purl/1399917.

Copy to clipboard


                    
@article{osti_1399917,

  title        = {Synthesis of Defect Perovskites (He2–x⟂x)(CaZr)F6 by Inserting Helium into the Negative Thermal Expansion Material CaZrF6},

  author       = {Hester, Brett R. and dos Santos, António M. and Molaison, Jamie J. and Hancock, Justin C. and Wilkinson, Angus P.},

  abstractNote = {Defect perovskites (He2–x⟂x)(CaZr)F6 can be prepared by inserting helium into CaZrF6 at high pressure. They can be recovered to ambient pressure at low temperature. There are no prior examples of perovskites with noble gases on the A-sites. The insertion of helium gas into CaZrF6 both elastically stiffens the material and reduces the magnitude of its negative thermal expansion. It also suppresses the onset of structural disorder, which is seen on compression in other media. Measurements of the gas released on warming to room temperature and Rietveld analyses of neutron diffraction data at low temperature indicate that exposure to helium gas at 500 MPa leads to a stoichiometry close to (He1⟂1)(CaZr)F6. Helium has a much higher solubility in CaZrF6 than silica glass or crystobalite. An analogue with composition (H2)2(CaZr)F6 would have a volumetric hydrogen storage capacity greater than current US DOE targets. We anticipate that other hybrid perovskites with small neutral molecules on the A-site can also be prepared and that they will display a rich structural chemistry.},

  doi          = {10.1021/jacs.7b07860},

  journal      = {Journal of the American Chemical Society},

  number       = 38,

  volume       = 139,

  place        = {United States},

  year         = {Mon Sep 11 00:00:00 EDT 2017},

  month        = {Mon Sep 11 00:00:00 EDT 2017}

}

Copy to clipboard

Journal Article:

Free Publicly Available Full Text

Accepted Manuscript (DOE)

Publisher's Version of Record

https://doi.org/10.1021/jacs.7b07860

Other availability

Search WorldCat to find libraries that may hold this journal

Citation Metrics:

Cited by: 16 works

Citation information provided by
Web of Science

Save / Share:

Export Metadata

Save to My Library

Works referenced in this record:

Group-Theoretical Analysis of Octahedral Tilting in Perovskites
journal, December 1998

Howard, C. J.; Stokes, H. T.
Acta Crystallographica Section B Structural Science, Vol. 54, Issue 6, p. 782-789
DOI: 10.1107/S0108768198004200

Simple ways of determining perovskite structures
journal, November 1975

Glazer, A. M.
Acta Crystallographica Section A, Vol. 31, Issue 6
DOI: 10.1107/S0567739475001635

The classification of tilted octahedra in perovskites
journal, November 1972

Glazer, A. M.
Acta Crystallographica Section B Structural Crystallography and Crystal Chemistry, Vol. 28, Issue 11
DOI: 10.1107/S0567740872007976

Structures and phase transitions in perovskites - a group-theoretical approach
journal, December 2004

Howard, Christopher J.; Stokes, Harold T.
Acta Crystallographica Section A Foundations of Crystallography, Vol. 61, Issue 1, p. 93-111
DOI: 10.1107/S0108767304024493

Perovskites with the Framework-Forming Xenon
journal, October 2015

Britvin, Sergey N.; Kashtanov, Sergei A.; Krzhizhanovskaya, Maria G.
Angewandte Chemie International Edition, Vol. 54, Issue 48
DOI: 10.1002/anie.201506690

Efficient Hybrid Solar Cells Based on Meso-Superstructured Organometal Halide Perovskites
journal, October 2012

Lee, M. M.; Teuscher, J.; Miyasaka, T.
Science, Vol. 338, Issue 6107, p. 643-647
DOI: 10.1126/science.1228604

Thermally Stable N ₂ -Intercalated WO ₃ Photoanodes for Water Oxidation
journal, October 2012

Mi, Qixi; Ping, Yuan; Li, Yan
Journal of the American Chemical Society, Vol. 134, Issue 44
DOI: 10.1021/ja3067622

Thermochemistry of a New Class of Materials Containing Dinitrogen Pairs in an Oxide Matrix
journal, June 2005

Tessier, Franck; Le Gendre, Laurent; Cheviré, François
Chemistry of Materials, Vol. 17, Issue 13
DOI: 10.1021/cm050402b

Large Negative Thermal Expansion and Anomalous Behavior on Compression in Cubic ReO ₃ -Type A ^II B ^IV F ₆ : CaZrF ₆ and CaHfF ₆
journal, May 2015

Hancock, Justin C.; Chapman, Karena W.; Halder, Gregory J.
Chemistry of Materials, Vol. 27, Issue 11
DOI: 10.1021/acs.chemmater.5b00662

Tungsten Oxide Clathrates for Water Oxidation: A First Principles Study
journal, October 2012

Ping, Yuan; Li, Yan; Gygi, Francois
Chemistry of Materials, Vol. 24, Issue 21
DOI: 10.1021/cm3032225

Pronounced Negative Thermal Expansion from a Simple Structure: Cubic ScF ₃
journal, November 2010

Greve, Benjamin K.; Martin, Kenneth L.; Lee, Peter L.
Journal of the American Chemical Society, Vol. 132, Issue 44
DOI: 10.1021/ja106711v

Composition, Response to Pressure, and Negative Thermal Expansion in M ^II B ^IV F ₆ (M = Ca, Mg; B = Zr, Nb)
journal, January 2017

Hester, Brett R.; Hancock, Justin C.; Lapidus, Saul H.
Chemistry of Materials, Vol. 29, Issue 2
DOI: 10.1021/acs.chemmater.6b04809

Atomic Linkage Flexibility Tuned Isotropic Negative, Zero, and Positive Thermal Expansion in MZrF ₆ (M = Ca, Mn, Fe, Co, Ni, and Zn)
journal, October 2016

Hu, Lei; Chen, Jun; Xu, Jiale
Journal of the American Chemical Society, Vol. 138, Issue 44
DOI: 10.1021/jacs.6b08746

Reducing the background from pressure vessels using a BRIM
journal, August 2011

Wilkinson, Angus P.; Morelock, Cody R.; Greve, Benjamin K.
Journal of Applied Crystallography, Vol. 44, Issue 5
DOI: 10.1107/S0021889811028925

Pressure-Induced Volume Expansion of Zeolites in the Natrolite Family
journal, May 2002

Lee, Yongjae; Vogt, Thomas; Hriljac, Joseph A.
Journal of the American Chemical Society, Vol. 124, Issue 19
DOI: 10.1021/ja0255960

Neon-Bearing Ammonium Metal Formates: Formation and Behaviour under Pressure
journal, September 2016

Collings, Ines E.; Bykova, Elena; Bykov, Maxim
ChemPhysChem, Vol. 17, Issue 21
DOI: 10.1002/cphc.201600854

Deactivation of Pressure-Induced Amorphization in Silicalite SiO ₂ by Insertion of Guest Species
journal, June 2010

Haines, Julien; Cambon, Olivier; Levelut, Claire
Journal of the American Chemical Society, Vol. 132, Issue 26
DOI: 10.1021/ja1034599

Tunable thermal expansion in framework materials through redox intercalation
journal, February 2017

Chen, Jun; Gao, Qilong; Sanson, Andrea
Nature Communications, Vol. 8, Issue 1
DOI: 10.1038/ncomms14441

Room-temperature compressibility of $C_{60}$ : Intercalation effects with He, Ne, and Ar
journal, May 1995

Schirber, J. E.; Kwei, G. H.; Jorgensen, J. D.
Physical Review B, Vol. 51, Issue 17
DOI: 10.1103/PhysRevB.51.12014

Compressed Arsenolite As ₄ O ₆ and Its Helium Clathrate As ₄ O ₆ ·2He
journal, June 2015

Guńka, Piotr A.; Dziubek, Kamil F.; Gładysiak, Andrzej
Crystal Growth & Design, Vol. 15, Issue 8
DOI: 10.1021/acs.cgd.5b00390

High-pressure behavior of a $Si O_{2}$ clathrate observed by using various pressure media
journal, May 2007

Yagi, Takehiko; Iida, Etsuko; Hirai, Hisako
Physical Review B, Vol. 75, Issue 17
DOI: 10.1103/PhysRevB.75.174115

Helium penetrates into silica glass and reduces its compressibility
journal, June 2011

Sato, Tomoko; Funamori, Nobumasa; Yagi, Takehiko
Nature Communications, Vol. 2, Issue 1
DOI: 10.1038/ncomms1343

Effect of helium on structure and compression behavior of SiO2 glass
journal, March 2011

Shen, G.; Mei, Q.; Prakapenka, V. B.
Proceedings of the National Academy of Sciences, Vol. 108, Issue 15
DOI: 10.1073/pnas.1102361108

Anomalous behavior of cristobalite in helium under high pressure
journal, September 2012

Sato, Tomoko; Takada, Hiroto; Yagi, Takehiko
Physics and Chemistry of Minerals, Vol. 40, Issue 1
DOI: 10.1007/s00269-012-0540-x

Hydrogen Solubility in Amorphous Silica at Pressures up to 75 kbar
journal, December 2012

Efimchenko, Vadim S.; Fedotov, Vladimir K.; Kuzovnikov, Mikhail A.
The Journal of Physical Chemistry B, Vol. 117, Issue 1
DOI: 10.1021/jp309991x

Hydrogen Solubility in Cristobalite at High Pressure
journal, October 2014

Efimchenko, Vadim S.; Fedotov, Vladimir K.; Kuzovnikov, Mikhail A.
The Journal of Physical Chemistry A, Vol. 118, Issue 44
DOI: 10.1021/jp509470q

Temperature-regulated guest admission and release in microporous materials
journal, June 2017

Li, Gang; Shang, Jin; Gu, Qinfen
Nature Communications, Vol. 8, Issue 1
DOI: 10.1038/ncomms15777

Works referencing / citing this record:

The high pressure gas capabilities at Oak Ridge National Laboratory’s neutron facilities
journal, September 2018

dos Santos, A. M.; Molaison, J. J.; Haberl, B.
Review of Scientific Instruments, Vol. 89, Issue 9
DOI: 10.1063/1.5032096

Disorder–order transitions in the perovskite metal–organic frameworks [(CH ₃ ) ₂ NH ₂ ][M(HCOO) ₃ ] at high pressure
journal, January 2018

Collings, Ines E.; Bykov, Maxim; Bykova, Elena
CrystEngComm, Vol. 20, Issue 25
DOI: 10.1039/c8ce00617b

Perovskite-related ReO3-type structures
journal, January 2020

Evans, Hayden A.; Wu, Yue; Seshadri, Ram
Nature Reviews Materials, Vol. 5, Issue 3
DOI: 10.1038/s41578-019-0160-x

Packing Rearrangements in 4-Hydroxycyanobenzene Under Pressure
journal, May 2019

Collings, Ines E.; Hanfland, Michael
Molecules, Vol. 24, Issue 9
DOI: 10.3390/molecules24091759

Guest-dependent negative thermal expansion in a lanthanide-based metal–organic framework
journal, January 2019

Gładysiak, Andrzej; Moosavi, Seyed Mohamad; Sarkisov, Lev
CrystEngComm, Vol. 21, Issue 35
DOI: 10.1039/c9ce00941h

Strongly coloured thiocyanate frameworks with perovskite-analogue structures
journal, January 2019

Cliffe, Matthew J.; Keyzer, Evan N.; Dunstan, Matthew T.
Chemical Science, Vol. 10, Issue 3
DOI: 10.1039/c8sc04082f

Disorder–order transitions in the perovskite metal–organic frameworks $[(CH_{3})_{2}NH_{2} ][M(HCOO)_{3}]$ at high pressure
text, January 2018

Collings, Ines; Bykov, Maxim; Bykova, Elena
Deutsches Elektronen-Synchrotron, DESY, Hamburg
DOI: 10.3204/pubdb-2019-00414

High Pressure Behavior of Chromium and Yttrium Molybdate (Cr2Mo3O12, Y2Mo3O12)
journal, October 2018

Young, Lindsay; Gadient, Jennifer; Lind, Cora
Frontiers in Chemistry, Vol. 6
DOI: 10.3389/fchem.2018.00478

Similar Records in DOE PAGES and OSTI.GOV collections:

Hybrid Double Perovskite Containing Helium: [He₂][CaZr]F₆

Journal Article Lloyd, Anthony J. ; Hester, Brett R. ; Baxter, Samuel J. ; ... - Chemistry of Materials

Perovskites are of great technological and geological importance, in large part, due to their considerable compositional and structural flexibility. However, the formation of perovskites with neutral species on their A-sites is very unusual. The formation, phase transitions and properties of [He₂][CaZr]F₆, which is the first noble gas containing perovskite to be made, are reported. It is likely that a large family of related materials can also be prepared. On compression in neon, the negative thermal expansion (NTE) material CaZrF₆ amorphizes at ~ 0. 5 GPa. However, on compression in helium at room temperature, gas is inserted into the structure tomore »« less
https://doi.org/10.1021/acs.chemmater.0c04782

Full Text Available
Composition, response to pressure, and negative thermal expansion in M^IIB^IVF₆ (M = Ca, Mg; B = Zr, Nb) [Composition, response to pressure, and negative thermal expansion in A^IIB^IVF₆; A - Ca, Mg, B - Zr, Nb]

Journal Article Hester, Brett R. ; Hancock, Justin C. ; Lapidus, Saul H. ; ... - Chemistry of Materials

CaZrF₆ has recently been shown to combine strong negative thermal expansion (NTE) over a very wide temperature range (at least 10–1000 K) with optical transparency from mid-IR into the UV range. Variable-temperature and high-pressure diffraction has been used to determine how the replacement of calcium by magnesium and zirconium by niobium(IV) modifies the phase behavior and physical properties of the compound. Similar to CaZrF₆, CaNbF₆ retains a cubic ReO₃-type structure down to 10 K and displays NTE up until at least 900 K. It undergoes a reconstructive phase transition upon compression to ~400 MPa at room temperature and pressure-induced amorphization above ~4 GPa. Prior to the first transition, it displays very strong pressure-induced softening. MgZrF₆ adopts a cubic (Fmmore » $$\bar{3}$$m) structure at 300 K and undergoes a symmetry-lowering phase transition involving octahedral tilts at ~100 K. Immediately above this transition, it shows modest NTE. Its’ thermal expansion increases upon heating, crossing through zero at ~500 K. Unlike CaZrF₆ and CaNbF₆, it undergoes an octahedral tilting transition upon compression (~370 MPa) prior to a reconstructive transition at ~1 GPa. Cubic MgZrF₆ displays both pressure-induced softening and stiffening upon heating. MgNbF₆ is cubic (Fm$$\bar{3}$$m) at room temperature, but it undergoes a symmetry-lowering octahedral tilting transition at ~280 K. It does not display NTE within the investigated temperature range (100–950 K). Furthermore the replacement of Zr(IV) by Nb(IV) leads to minor changes in phase behavior and properties, the replacement of the calcium by the smaller and more polarizing magnesium leads to large changes in both phase behavior and thermal expansion.« less
Cited by 30
https://doi.org/10.1021/acs.chemmater.6b04809

Full Text Available
Controlling the Negative Thermal Expansion and Response to Pressure in ReO₃-type Fluorides by the Deliberate Introduction of Excess Fluoride: Mg_1–x Zr_1+xF_6+2x, x = 0.15, 0.30, 0.40, and 0.50

Journal Article Baxter, Samuel J. ; Hester, Brett R. ; Wright, Breaunna R. ; ... - Chemistry of Materials

Cubic ReO₃-type fluorides often display negative or very low thermal expansion. However, they also typically undergo phase transitions upon cooling and/or modest compression, which are undesirable from the perspective of potential applications. Density measurements and total scattering data for Mg_1–xZr_1+xF_6+2x, x = 0.15, 0.30, 0.40, and 0.50, indicate that the introduction of excess fluoride into cubic MgZrF₆ is accompanied by the population of interstitial fluoride sites and the conversion of corner to edge shared coordination polyhedra. Unlike MgZrF₆, no phase transitions are seen upon cooling these materials to 10 K, and the first high pressure phase transition in these compositionsmore »« less
Cited by 10
https://doi.org/10.1021/acs.chemmater.9b00592

Full Text Available
Thermal Expansion and Response to Pressure of Double-ReO₃ -Type Fluorides NaM^VF₆ (M = Nb, Ta)

Journal Article Lloyd, Anthony J. ; Masterson, Eric B. ; Baxter, Samuel J. ; ... - Inorganic Chemistry

Several II–IV double-ReO₃-type (DROT) fluorides are known to exhibit strong negative thermal expansion (NTE) over a wide temperature range while retaining a cubic structure down to 120 K or lower. CaZrF₆, CaNbF₆, CaTiF₆, and MgZrF₆, embody these properties. In contrast to the behavior of these II–IV materials, the I–V DROT material, NaSbF₆, has been reported to display a phase transition from rhombohedral to cubic above 300 K and positive thermal expansion both above and below the transition. In this work, NaNbF₆ and NaTaF₆ are shown to undergo first-order cubic-to-rhombohedral transitions on cooling to ~130 K. Above this transition, NaNbF₆ shows modest NTE between 160 and 250 K, whereas NaTaF₆ exhibits near-zero thermal expansion over the range 210–270 K. These I–V systems are elastically softer than their II–IV counterparts, with a zero pressure bulk modulus, K0, of 14.6(8) GPa and first derivative of the bulk modulus with respect to pressure, K₀', of -18(3) for cubic NaNbF₆, and K₀ = 14.47(3) GPa and K₀'= -21.56(7) for cubic NaTaF₆. When subject to ~0.3 GPa at 300 K, both compounds exhibit a phase transition from Fmore »« less
https://doi.org/10.1021/acs.inorgchem.0c01693

Full Text Available
Negative Thermal Expansion, Response to Pressure and Phase Transitions in CaTiF₆

Journal Article Hester, Brett R. ; Wilkinson, Angus P. - Inorganic Chemistry

Strong volume negative thermal expansion over a wide temperature range typically only occurs in ReO₃-type fluorides that retain an ideal cubic structure to very low temperatures, such as ScF₃, CaZrF₆, CaHfF₆, and CaNbF₆. In this work, CaTiF₆ was examined in an effort to expand this small family of materials. However, it undergoes a cubic (more »« less
Cited by 21
https://doi.org/10.1021/acs.inorgchem.8b01912

Full Text Available

Similar Records

Title: Synthesis of Defect Perovskites (He2–x⟂x)(CaZr)F6 by Inserting Helium into the Negative Thermal Expansion Material CaZrF6

Abstract

Citation Formats

Group-Theoretical Analysis of Octahedral Tilting in Perovskites journal, December 1998

Simple ways of determining perovskite structures journal, November 1975

The classification of tilted octahedra in perovskites journal, November 1972

Structures and phase transitions in perovskites - a group-theoretical approach journal, December 2004

Perovskites with the Framework-Forming Xenon journal, October 2015

Efficient Hybrid Solar Cells Based on Meso-Superstructured Organometal Halide Perovskites journal, October 2012

Thermally Stable N 2 -Intercalated WO 3 Photoanodes for Water Oxidation journal, October 2012

Thermochemistry of a New Class of Materials Containing Dinitrogen Pairs in an Oxide Matrix journal, June 2005

Large Negative Thermal Expansion and Anomalous Behavior on Compression in Cubic ReO 3 -Type A II B IV F 6 : CaZrF 6 and CaHfF 6 journal, May 2015

Tungsten Oxide Clathrates for Water Oxidation: A First Principles Study journal, October 2012

Pronounced Negative Thermal Expansion from a Simple Structure: Cubic ScF 3 journal, November 2010

Composition, Response to Pressure, and Negative Thermal Expansion in M II B IV F 6 (M = Ca, Mg; B = Zr, Nb) journal, January 2017

Atomic Linkage Flexibility Tuned Isotropic Negative, Zero, and Positive Thermal Expansion in MZrF 6 (M = Ca, Mn, Fe, Co, Ni, and Zn) journal, October 2016

Reducing the background from pressure vessels using a BRIM journal, August 2011

Pressure-Induced Volume Expansion of Zeolites in the Natrolite Family journal, May 2002

Neon-Bearing Ammonium Metal Formates: Formation and Behaviour under Pressure journal, September 2016

Deactivation of Pressure-Induced Amorphization in Silicalite SiO 2 by Insertion of Guest Species journal, June 2010

Tunable thermal expansion in framework materials through redox intercalation journal, February 2017

Room-temperature compressibility of C 60 : Intercalation effects with He, Ne, and Ar journal, May 1995

Compressed Arsenolite As 4 O 6 and Its Helium Clathrate As 4 O 6 ·2He journal, June 2015

High-pressure behavior of a Si O 2 clathrate observed by using various pressure media journal, May 2007

Helium penetrates into silica glass and reduces its compressibility journal, June 2011

Effect of helium on structure and compression behavior of SiO2 glass journal, March 2011

Anomalous behavior of cristobalite in helium under high pressure journal, September 2012

Hydrogen Solubility in Amorphous Silica at Pressures up to 75 kbar journal, December 2012

Hydrogen Solubility in Cristobalite at High Pressure journal, October 2014

Temperature-regulated guest admission and release in microporous materials journal, June 2017

The high pressure gas capabilities at Oak Ridge National Laboratory’s neutron facilities journal, September 2018

Disorder–order transitions in the perovskite metal–organic frameworks [(CH 3 ) 2 NH 2 ][M(HCOO) 3 ] at high pressure journal, January 2018

Perovskite-related ReO3-type structures journal, January 2020

Packing Rearrangements in 4-Hydroxycyanobenzene Under Pressure journal, May 2019

Guest-dependent negative thermal expansion in a lanthanide-based metal–organic framework journal, January 2019

Strongly coloured thiocyanate frameworks with perovskite-analogue structures journal, January 2019

Disorder–order transitions in the perovskite metal–organic frameworks $[(CH_{3})_{2}NH_{2} ][M(HCOO)_{3}]$ at high pressure text, January 2018

High Pressure Behavior of Chromium and Yttrium Molybdate (Cr2Mo3O12, Y2Mo3O12) journal, October 2018

Title: Synthesis of Defect Perovskites (He_2–x⟂_x)(CaZr)F₆ by Inserting Helium into the Negative Thermal Expansion Material CaZrF₆

Group-Theoretical Analysis of Octahedral Tilting in Perovskites
journal, December 1998

Simple ways of determining perovskite structures
journal, November 1975

The classification of tilted octahedra in perovskites
journal, November 1972

Structures and phase transitions in perovskites - a group-theoretical approach
journal, December 2004

Perovskites with the Framework-Forming Xenon
journal, October 2015

Efficient Hybrid Solar Cells Based on Meso-Superstructured Organometal Halide Perovskites
journal, October 2012

Thermally Stable N ₂ -Intercalated WO ₃ Photoanodes for Water Oxidation
journal, October 2012

Thermochemistry of a New Class of Materials Containing Dinitrogen Pairs in an Oxide Matrix
journal, June 2005

Large Negative Thermal Expansion and Anomalous Behavior on Compression in Cubic ReO ₃ -Type A ^II B ^IV F ₆ : CaZrF ₆ and CaHfF ₆
journal, May 2015

Tungsten Oxide Clathrates for Water Oxidation: A First Principles Study
journal, October 2012

Pronounced Negative Thermal Expansion from a Simple Structure: Cubic ScF ₃
journal, November 2010

Composition, Response to Pressure, and Negative Thermal Expansion in M ^II B ^IV F ₆ (M = Ca, Mg; B = Zr, Nb)
journal, January 2017

Atomic Linkage Flexibility Tuned Isotropic Negative, Zero, and Positive Thermal Expansion in MZrF ₆ (M = Ca, Mn, Fe, Co, Ni, and Zn)
journal, October 2016

Reducing the background from pressure vessels using a BRIM
journal, August 2011

Pressure-Induced Volume Expansion of Zeolites in the Natrolite Family
journal, May 2002

Neon-Bearing Ammonium Metal Formates: Formation and Behaviour under Pressure
journal, September 2016

Deactivation of Pressure-Induced Amorphization in Silicalite SiO ₂ by Insertion of Guest Species
journal, June 2010

Tunable thermal expansion in framework materials through redox intercalation
journal, February 2017

Room-temperature compressibility of $C_{60}$ : Intercalation effects with He, Ne, and Ar
journal, May 1995

Compressed Arsenolite As ₄ O ₆ and Its Helium Clathrate As ₄ O ₆ ·2He
journal, June 2015

High-pressure behavior of a $Si O_{2}$ clathrate observed by using various pressure media
journal, May 2007

Helium penetrates into silica glass and reduces its compressibility
journal, June 2011

Effect of helium on structure and compression behavior of SiO2 glass
journal, March 2011

Anomalous behavior of cristobalite in helium under high pressure
journal, September 2012

Hydrogen Solubility in Amorphous Silica at Pressures up to 75 kbar
journal, December 2012

Hydrogen Solubility in Cristobalite at High Pressure
journal, October 2014

Temperature-regulated guest admission and release in microporous materials
journal, June 2017

The high pressure gas capabilities at Oak Ridge National Laboratory’s neutron facilities
journal, September 2018

Disorder–order transitions in the perovskite metal–organic frameworks [(CH ₃ ) ₂ NH ₂ ][M(HCOO) ₃ ] at high pressure
journal, January 2018

Perovskite-related ReO3-type structures
journal, January 2020

Packing Rearrangements in 4-Hydroxycyanobenzene Under Pressure
journal, May 2019

Guest-dependent negative thermal expansion in a lanthanide-based metal–organic framework
journal, January 2019

Strongly coloured thiocyanate frameworks with perovskite-analogue structures
journal, January 2019

Disorder–order transitions in the perovskite metal–organic frameworks $[(CH_{3})_{2}NH_{2} ][M(HCOO)_{3}]$ at high pressure
text, January 2018

High Pressure Behavior of Chromium and Yttrium Molybdate (Cr2Mo3O12, Y2Mo3O12)
journal, October 2018