skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Symmetry and light stuffing of H o 2 T i 2 O 7 ,   E r 2 T i 2 O 7 , and Y b 2 T i 2 O 7 characterized by synchrotron x-ray diffraction

Abstract

The Ho2Ti2O7, Er2Ti2O7 and Yb2Ti2O7 pyrochlores were studied by synchrotron X-ray diffraction to determine whether the (002) peak, forbidden in the pyrochlore space group Fd-3m but observed in single crystal neutron scattering measurements, is present due to a deviation of their pyrochlore structure from Fd-3m symmetry. Synchrotron diffraction measurements on precisely synthesized stoichiometric and non-stoichiometric powders and a crushed floating zone crystal of Ho2Ti2O7 revealed that the (002) reflection is absent in all cases to a sensitivity of approximately one part in 30,000 of the strongest X-ray diffraction peak. This indicates to high sensitivity that the structural space group of these rare earth titanate pyrochlores is Fd-3m, and that thus the (002) peak observed in the neutron scattering experiments has a non-structural origin. The cell parameters and internal strain for lightly stuffed Ho2+xTi2-xO7 are also presented.

Authors:
; ; ; ;
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
Natural Sciences and Engineering Research Council of Canada (NSERC); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1392029
DOE Contract Number:  
AC02-06CH11357
Resource Type:
Journal Article
Journal Name:
Physical Review. B, Condensed Matter and Materials Physics
Additional Journal Information:
Journal Volume: 92; Journal Issue: 2; Journal ID: ISSN 1098-0121
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English

Citation Formats

Baroudi, Kristen, Gaulin, Bruce D., Lapidus, Saul H., Gaudet, Jonathan, and Cava, R. J. Symmetry and light stuffing of Ho2Ti2O7, Er2Ti2O7 , and Yb2Ti2O7 characterized by synchrotron x-ray diffraction. United States: N. p., 2015. Web. doi:10.1103/PhysRevB.92.024110.
Baroudi, Kristen, Gaulin, Bruce D., Lapidus, Saul H., Gaudet, Jonathan, & Cava, R. J. Symmetry and light stuffing of Ho2Ti2O7, Er2Ti2O7 , and Yb2Ti2O7 characterized by synchrotron x-ray diffraction. United States. doi:10.1103/PhysRevB.92.024110.
Baroudi, Kristen, Gaulin, Bruce D., Lapidus, Saul H., Gaudet, Jonathan, and Cava, R. J. Wed . "Symmetry and light stuffing of Ho2Ti2O7, Er2Ti2O7 , and Yb2Ti2O7 characterized by synchrotron x-ray diffraction". United States. doi:10.1103/PhysRevB.92.024110.
@article{osti_1392029,
title = {Symmetry and light stuffing of Ho2Ti2O7, Er2Ti2O7 , and Yb2Ti2O7 characterized by synchrotron x-ray diffraction},
author = {Baroudi, Kristen and Gaulin, Bruce D. and Lapidus, Saul H. and Gaudet, Jonathan and Cava, R. J.},
abstractNote = {The Ho2Ti2O7, Er2Ti2O7 and Yb2Ti2O7 pyrochlores were studied by synchrotron X-ray diffraction to determine whether the (002) peak, forbidden in the pyrochlore space group Fd-3m but observed in single crystal neutron scattering measurements, is present due to a deviation of their pyrochlore structure from Fd-3m symmetry. Synchrotron diffraction measurements on precisely synthesized stoichiometric and non-stoichiometric powders and a crushed floating zone crystal of Ho2Ti2O7 revealed that the (002) reflection is absent in all cases to a sensitivity of approximately one part in 30,000 of the strongest X-ray diffraction peak. This indicates to high sensitivity that the structural space group of these rare earth titanate pyrochlores is Fd-3m, and that thus the (002) peak observed in the neutron scattering experiments has a non-structural origin. The cell parameters and internal strain for lightly stuffed Ho2+xTi2-xO7 are also presented.},
doi = {10.1103/PhysRevB.92.024110},
journal = {Physical Review. B, Condensed Matter and Materials Physics},
issn = {1098-0121},
number = 2,
volume = 92,
place = {United States},
year = {2015},
month = {7}
}

Works referenced in this record:

Order by Quantum Disorder in Er 2 Ti 2 O 7
journal, October 2012


Magnetic pyrochlore oxides
journal, January 2010

  • Gardner, Jason S.; Gingras, Michel J. P.; Greedan, John E.
  • Reviews of Modern Physics, Vol. 82, Issue 1
  • DOI: 10.1103/RevModPhys.82.53

Revisiting static and dynamic spin-ice correlations in Ho 2 Ti 2 O 7 with neutron scattering
journal, January 2009


Quantum Order by Disorder and Accidental Soft Mode in Er 2 Ti 2 O 7
journal, August 2012


Revised effective ionic radii and systematic studies of interatomic distances in halides and chalcogenides
journal, September 1976


Stuffed rare earth pyrochlore solid solutions
journal, October 2006


Quantum Excitations in Quantum Spin Ice
journal, October 2011


Magnetoelastics of a Spin Liquid: X-Ray Diffraction Studies of Tb 2 Ti 2 O 7 in Pulsed Magnetic Fields
journal, August 2010


Structural disorder and properties of the stuffed pyrochlore Ho 2 Ti O 5
journal, August 2007


Recent advances in magnetic structure determination by neutron powder diffraction
journal, October 1993


Zero-point entropy in ‘spin ice’
journal, May 1999

  • Ramirez, A. P.; Hayashi, A.; Cava, R. J.
  • Nature, Vol. 399, Issue 6734
  • DOI: 10.1038/20619

Single crystal growth by the floating-zone method of a geometrically frustrated pyrochlore antiferromagnet, Tb2Ti2O7
journal, August 1998


Frustrated rare earth magnetism: Spin glasses, spin liquids and spin ices in pyrochlore oxides
journal, February 2006


Long-range order and spin-liquid states of polycrystalline Tb 2 + x Ti 2 x O 7 + y
journal, February 2013


Field-Induced Order and Spin Waves in the Pyrochlore Antiferromagnet Tb 2 Ti 2 O 7
journal, May 2006


Cooperative Paramagnetism in the Geometrically Frustrated Pyrochlore Antiferromagnet Tb 2 Ti 2 O 7
journal, February 1999


Spin Correlations in Ho 2 Ti 2 O 7 : A Dipolar Spin Ice System
journal, July 2001


Lightly stuffed pyrochlore structure of single-crystalline Yb 2 Ti 2 O 7 grown by the optical floating zone technique
journal, November 2012


Dirty spin ice: The effect of dilution on spin freezing in Dy 2 Ti 2 O 7
journal, August 2002


Spin Waves and Quantum Criticality in the Frustrated X Y Pyrochlore Antiferromagnet Er 2 Ti 2 O 7
journal, October 2008


Williamson-Hall analysis in estimation of lattice strain in nanometer-sized ZnO particles
journal, January 2012

  • Mote, Vd; Purushotham, Y.; Dole, Bn
  • Journal of Theoretical and Applied Physics, Vol. 6, Issue 1
  • DOI: 10.1186/2251-7235-6-6

Single crystal growth of the pyrochlores R2Ti2O7 (R=rare earth) by the optical floating-zone method
journal, August 2013


Synthesis, floating zone crystal growth and characterization of the quantum spin ice Pr2Zr2O7 pyrochlore
journal, September 2014