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High-Pressure Routes to New Pyrochlores and Novel Magnetism

1,2,† and 3,4,5,*,†
Department of Physics and Astronomy, University of Tennessee, Knoxville, TN 37996-1200, USA
National High Magnetic Field Laboratory, Florida State University, Tallahassee, FL 32310-3706, USA
Department of Chemistry, University of Winnipeg, Winnipeg, MB R3B 2E2, Canada
Department of Chemistry, University of Manitoba, Winnipeg, MB R3T 2N9, Canada
Canadian Institute for Advanced Research, Toronto, ON M5G 1Z7, Canada
Author to whom correspondence should be addressed.
These authors contributed equally to this work.
Inorganics 2019, 7(4), 49;
Received: 15 February 2019 / Revised: 15 March 2019 / Accepted: 26 March 2019 / Published: 2 April 2019
(This article belongs to the Special Issue Magnetic Oxide Materials)
PDF [7346 KB, uploaded 2 April 2019]


The pyrochlore structure (A2B2O7) has been an object of consistent study by materials scientists largely due to the stability of the cubic lattice with respect to a wide variety of chemical species on the A or B sites. The criterion for stability under ambient conditions is controlled by the ratio of these cations, which is empirically 1.36 < RA/RB < 1.71. However, under applied pressure synthesis conditions, the pyrochlore lattice is stable up to RA/RB ∼ 2.30, opening up possibilities for new compounds. In this review, we will highlight recent work in exploring new rare-earth pyrochlores such as the germanates RE2Ge2O7 and platinates RE2Pt2O7. We highlight recent discoveries made in these pyrochlores such as highly correlated spin ice behavior, spin liquid ground states, and exotic magnetic ordering. View Full-Text
Keywords: geometrically frustrated magnetism; high-pressure synthesis; magnetic oxides geometrically frustrated magnetism; high-pressure synthesis; magnetic oxides

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Zhou, H.; Wiebe, C.R. High-Pressure Routes to New Pyrochlores and Novel Magnetism. Inorganics 2019, 7, 49.

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