Consequences of pressure-instigated spin crossover in RFeO3 perovskites; a volume collapse with no symmetry modification
(2005) In Europhysics Letters 71(2). p.228-234- Abstract
High-pressure X-ray diffraction, Mössbauer, and Raman studies in the antiferromagnetic insulators RFeO3 orthorhombic perovskites (R = Pr, Eu, Lu) disclose an unusual phenomena of a reversible first-order isostructural phase transition around 50 GPa concurring with an abrupt ∼ 5% volume decrease. It is shown experimentally that this transformation concurs with, and is driven by, a high-to-low-spin transition taking place in Fe3+; a manifestation of a new kind of isostructural phase transition. These studies suggest that the RFeO3 perovskite is a rather sturdy oxide-structure, maintaining its original structural symmetry beyond 125 GPa.
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https://lup.lub.lu.se/record/00a01ed9-ebbd-451a-ab2d-f1fea7d667bb
- author
- Rozenberg, G. Kh ; Pasternak, M. P. ; Xu, W. M. ; Dubrovinsky, L. S. ; Carlson, S. LU and Taylor, R. D.
- publishing date
- 2005-07-15
- type
- Contribution to journal
- publication status
- published
- in
- Europhysics Letters
- volume
- 71
- issue
- 2
- pages
- 7 pages
- publisher
- EDP Sciences
- external identifiers
-
- scopus:22544433723
- ISSN
- 0295-5075
- DOI
- 10.1209/epl/i2005-10071-9
- language
- English
- LU publication?
- no
- id
- 00a01ed9-ebbd-451a-ab2d-f1fea7d667bb
- date added to LUP
- 2016-05-04 12:45:15
- date last changed
- 2022-03-31 23:46:50
@article{00a01ed9-ebbd-451a-ab2d-f1fea7d667bb, abstract = {{<p>High-pressure X-ray diffraction, Mössbauer, and Raman studies in the antiferromagnetic insulators RFeO<sub>3</sub> orthorhombic perovskites (R = Pr, Eu, Lu) disclose an unusual phenomena of a reversible first-order isostructural phase transition around 50 GPa concurring with an abrupt ∼ 5% volume decrease. It is shown experimentally that this transformation concurs with, and is driven by, a high-to-low-spin transition taking place in Fe<sup>3+</sup>; a manifestation of a new kind of isostructural phase transition. These studies suggest that the RFeO<sub>3</sub> perovskite is a rather sturdy oxide-structure, maintaining its original structural symmetry beyond 125 GPa.</p>}}, author = {{Rozenberg, G. Kh and Pasternak, M. P. and Xu, W. M. and Dubrovinsky, L. S. and Carlson, S. and Taylor, R. D.}}, issn = {{0295-5075}}, language = {{eng}}, month = {{07}}, number = {{2}}, pages = {{228--234}}, publisher = {{EDP Sciences}}, series = {{Europhysics Letters}}, title = {{Consequences of pressure-instigated spin crossover in RFeO<sub>3</sub> perovskites; a volume collapse with no symmetry modification}}, url = {{http://dx.doi.org/10.1209/epl/i2005-10071-9}}, doi = {{10.1209/epl/i2005-10071-9}}, volume = {{71}}, year = {{2005}}, }