Magnetic phase diagram of ε'-FeH

Ying, Jianjun; Zhao, Jiyong; Bi, Wenli; Alp, E. Ercan; Xiao, Yuming; Chow, Paul; Shen, Guoyin; Struzhkin, Viktor V.

doi:10.1103/PhysRevB.101.020405

Title: Magnetic phase diagram of $ε^{'}$ -FeH

Abstract

Iron hydrides attract significant interest as candidates for the main constituents of the Earth's core in geophysics and planetary science. However, their basic physical properties are still not well known. Here, we combined high-pressure transport, synchrotron radiation Mossbauer, and Fe K β x-ray emission spectroscopy measurements on ε'-FeH to map out a detailed magnetic phase diagram of this hydride phase of iron. In contrast to our original expectations, we found two magnetic phase transitions at high pressure due to two inequivalent iron sites existing in the ε'-FeH structure. Our results account for the previous large pressure difference on the loss of ferromagnetism between experiment and theoretical calculations. Finally, the discovery of an unexpected complex magnetic phase diagram in ε'-FeH has implications for a better understanding of the magnetic and physical properties of the iron-hydrogen compounds, important for the conditions of planetary interiors.

Authors:

^[1]; Zhao, Jiyong ^[2]; Bi, Wenli ^[3]; Alp, E. Ercan ^[2]; Xiao, Yuming ^[4]; Chow, Paul ^[4]; Shen, Guoyin ^[4]; Struzhkin, Viktor V. ^[5]

Univ. of Science and Technology of China, Hefei (China); Carnegie Inst. of Washington, Washington, DC (United States)
Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS); Univ. of Illinois at Urbana-Champaign, IL (United States); Univ. of Alabama, Birmingham, AL (United States)
Argonne National Lab. (ANL), Argonne, IL (United States)
Carnegie Inst. of Washington, Washington, DC (United States); Center for High Pressure Science and Technology Advanced Research, Shanghai (China)

Publication Date:: Tue Jan 14 00:00:00 EST 2020

Research Org.:: Argonne National Laboratory (ANL), Argonne, IL (United States)

Sponsoring Org.:: USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF)

OSTI Identifier:: 1614789

Grant/Contract Number:: AC02-06CH11357; NA0001974; FG02-99ER45775; EAR-160685

Resource Type:: Accepted Manuscript

Journal Name:: Physical Review B

Additional Journal Information:: Journal Volume: 101; Journal Issue: 2; Journal ID: ISSN 2469-9950

Publisher:: American Physical Society (APS)

Country of Publication:: United States

Language:: English

Subject:: 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; geophysics; magnetic phase transitions; magnetism; phase diagrams; pressure effects; hydrides; transition metals; Mossbauer spectroscopy; resistivity measurements; X-ray emission spectroscopy

Citation Formats


                    Ying, Jianjun, Zhao, Jiyong, Bi, Wenli, Alp, E. Ercan, Xiao, Yuming, Chow, Paul, Shen, Guoyin, and Struzhkin, Viktor V. Magnetic phase diagram of ε'-FeH.  United States: N. p., 2020. 
Web.  doi:10.1103/PhysRevB.101.020405.

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                    Ying, Jianjun, Zhao, Jiyong, Bi, Wenli, Alp, E. Ercan, Xiao, Yuming, Chow, Paul, Shen, Guoyin, & Struzhkin, Viktor V. Magnetic phase diagram of ε'-FeH.  United States.  https://doi.org/10.1103/PhysRevB.101.020405

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                    Ying, Jianjun, Zhao, Jiyong, Bi, Wenli, Alp, E. Ercan, Xiao, Yuming, Chow, Paul, Shen, Guoyin, and Struzhkin, Viktor V. Tue .  
"Magnetic phase diagram of ε'-FeH".  United States.  https://doi.org/10.1103/PhysRevB.101.020405.  https://www.osti.gov/servlets/purl/1614789.

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@article{osti_1614789,

  title        = {Magnetic phase diagram of ε'-FeH},

  author       = {Ying, Jianjun and Zhao, Jiyong and Bi, Wenli and Alp, E. Ercan and Xiao, Yuming and Chow, Paul and Shen, Guoyin and Struzhkin, Viktor V.},

  abstractNote = {Iron hydrides attract significant interest as candidates for the main constituents of the Earth's core in geophysics and planetary science. However, their basic physical properties are still not well known. Here, we combined high-pressure transport, synchrotron radiation Mossbauer, and Fe K β x-ray emission spectroscopy measurements on ε'-FeH to map out a detailed magnetic phase diagram of this hydride phase of iron. In contrast to our original expectations, we found two magnetic phase transitions at high pressure due to two inequivalent iron sites existing in the ε'-FeH structure. Our results account for the previous large pressure difference on the loss of ferromagnetism between experiment and theoretical calculations. Finally, the discovery of an unexpected complex magnetic phase diagram in ε'-FeH has implications for a better understanding of the magnetic and physical properties of the iron-hydrogen compounds, important for the conditions of planetary interiors.},

  doi          = {10.1103/PhysRevB.101.020405},

  journal      = {Physical Review B},

  number       = 2,

  volume       = 101,

  place        = {United States},

  year         = {Tue Jan 14 00:00:00 EST 2020},

  month        = {Tue Jan 14 00:00:00 EST 2020}

}

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Title: Magnetic phase diagram of ε' -FeH

Abstract

Citation Formats

Static compression of iron to 300 GPa and Fe 0.8 Ni 0.2 alloy to 260 GPa: Implications for composition of the core journal, January 1990

Compression of iron hydride to 80 GPa and hydrogen in the Earth's inner core: COMPRESSION OF IRON HYDRIDE TO 80 GPA journal, March 2004

Ab initio study of iron and iron hydride: II. Structural and magnetic properties of close-packed Fe and FeH journal, June 1998

High-pressure hydrides of iron and its alloys journal, June 2002

Probing the 3d Spin Momentum with X-ray Emission Spectroscopy: The Case of Molecular-Spin Transitions journal, June 2006

Superconductivity in the non-magnetic state of iron under pressure journal, July 2001

Mössbauer study of hydrides and deuterides of iron and cobalt journal, August 1991

Elasticity and constitution of the Earth's interior journal, June 1952

A compact membrane-driven diamond anvil cell and cryostat system for nuclear resonant scattering at high pressure and low temperature journal, December 2017

Structural and electrical transport properties of FeH x under high pressures and low temperatures journal, March 2011

Interplay of magnetism and superconductivity in the compressed Fe-ladder compound BaFe 2 Se 3 journal, June 2017

Magnetic and structural α − ε phase transition in Fe monitored by x-ray emission spectroscopy journal, December 1999

High-Pressure Chemistry of Hydrogen in Metals: In Situ Study of Iron Hydride journal, July 1991

Nuclear resonant x-ray scattering of iron hydride at high pressure journal, January 2004

Hydrogen in the Deep Earth journal, May 2001

The iron–water reaction and the evolution of the Earth journal, March 1984

Miniature diamond anvil cell for broad range of high pressure measurements journal, April 2009

High-Pressure Hydrides of Iron and Its Alloys journal, February 2003

Dynamics of the Magnetic and Structural α − ε Phase Transition in Iron journal, December 2004

The Nature of the Earth's Core journal, May 1990

The system iron-enstatite-water at high pressures and temperatures—formation of iron hydride and some geophysical implications journal, December 1984

CONUSS and PHOENIX: Evaluation of nuclear resonant scattering data journal, March 2000

Title: Magnetic phase diagram of $ε^{'}$ -FeH

Static compression of iron to 300 GPa and Fe _0.8 Ni _0.2 alloy to 260 GPa: Implications for composition of the core
journal, January 1990

Compression of iron hydride to 80 GPa and hydrogen in the Earth's inner core: COMPRESSION OF IRON HYDRIDE TO 80 GPA
journal, March 2004

Ab initio study of iron and iron hydride: II. Structural and magnetic properties of close-packed Fe and FeH
journal, June 1998

High-pressure hydrides of iron and its alloys
journal, June 2002

Probing the 3d Spin Momentum with X-ray Emission Spectroscopy: The Case of Molecular-Spin Transitions
journal, June 2006

Superconductivity in the non-magnetic state of iron under pressure
journal, July 2001

Mössbauer study of hydrides and deuterides of iron and cobalt
journal, August 1991

Elasticity and constitution of the Earth's interior
journal, June 1952

A compact membrane-driven diamond anvil cell and cryostat system for nuclear resonant scattering at high pressure and low temperature
journal, December 2017

Structural and electrical transport properties of FeH _x under high pressures and low temperatures
journal, March 2011

Interplay of magnetism and superconductivity in the compressed Fe-ladder compound ${BaFe}_{2} {Se}_{3}$
journal, June 2017

Magnetic and structural $α - ε$ phase transition in Fe monitored by x-ray emission spectroscopy
journal, December 1999

High-Pressure Chemistry of Hydrogen in Metals: In Situ Study of Iron Hydride
journal, July 1991

Nuclear resonant x-ray scattering of iron hydride at high pressure
journal, January 2004

Hydrogen in the Deep Earth
journal, May 2001

The iron–water reaction and the evolution of the Earth
journal, March 1984

Miniature diamond anvil cell for broad range of high pressure measurements
journal, April 2009

High-Pressure Hydrides of Iron and Its Alloys
journal, February 2003

Dynamics of the Magnetic and Structural $α − ε$ Phase Transition in Iron
journal, December 2004

The Nature of the Earth's Core
journal, May 1990

The system iron-enstatite-water at high pressures and temperatures—formation of iron hydride and some geophysical implications
journal, December 1984

CONUSS and PHOENIX: Evaluation of nuclear resonant scattering data
journal, March 2000