volume 27 issue 27 pages 275501

Mechanism of magnetic moment collapse under pressure in ferropericlase.

Publication typeJournal Article
Publication date2015-06-18
scimago Q2
wos Q3
SJR0.624
CiteScore4.6
Impact factor2.6
ISSN09538984, 1361648X
Condensed Matter Physics
General Materials Science
Abstract
We propose a new scenario for the magnetic collapse under pressure in ferropericlase (FP) (Fe(1/4)Mg(3/4))O without the presence of intermediate spin state, which contradicts the mechanism proposed in (2013 Phys. Rev. B 87 165113). This scenario is supported by results of combined local density approximation + dynamical mean-field theory method calculations for the paramagnetic phase at ambient and high pressures. At ambient pressure, calculation gave (Fe(1/4)Mg(3/4))O as an insulator with Fe 3d-shell in high-spin state. Experimentally observed high-spin to low-spin state transition of the Fe(2+) ion in the pressure range of 35-75 GPa is successfully reproduced in our calculations. The spin crossover is characterized by coexistence of Fe(2+) ions in high and low spin state but intermediate spin state is absent in the whole pressure range. Moreover, the probability of Fe ion d(7) onfiguration with S = 1 grows with pressure due to shortening of metal-oxygen distance. Also, no metal-insulator transition was obtained up to the pressure 140 GPa in agreement with experiment.
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Skorikov N. et al. Mechanism of magnetic moment collapse under pressure in ferropericlase. // Journal of Physics Condensed Matter. 2015. Vol. 27. No. 27. p. 275501.
GOST all authors (up to 50) Copy
Skorikov N., Shorikov A. O., Skornyakov S. L., KOROTIN M. A., Anisimov V. Mechanism of magnetic moment collapse under pressure in ferropericlase. // Journal of Physics Condensed Matter. 2015. Vol. 27. No. 27. p. 275501.
RIS |
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RIS Copy
TY - JOUR
DO - 10.1088/0953-8984/27/27/275501
UR - https://doi.org/10.1088/0953-8984/27/27/275501
TI - Mechanism of magnetic moment collapse under pressure in ferropericlase.
T2 - Journal of Physics Condensed Matter
AU - Skorikov, N.A
AU - Shorikov, A. O.
AU - Skornyakov, S. L.
AU - KOROTIN, M. A.
AU - Anisimov, V.I.
PY - 2015
DA - 2015/06/18
PB - IOP Publishing
SP - 275501
IS - 27
VL - 27
PMID - 26086296
SN - 0953-8984
SN - 1361-648X
ER -
BibTex |
Cite this
BibTex (up to 50 authors) Copy
@article{2015_Skorikov,
author = {N.A Skorikov and A. O. Shorikov and S. L. Skornyakov and M. A. KOROTIN and V.I. Anisimov},
title = {Mechanism of magnetic moment collapse under pressure in ferropericlase.},
journal = {Journal of Physics Condensed Matter},
year = {2015},
volume = {27},
publisher = {IOP Publishing},
month = {jun},
url = {https://doi.org/10.1088/0953-8984/27/27/275501},
number = {27},
pages = {275501},
doi = {10.1088/0953-8984/27/27/275501}
}
MLA
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MLA Copy
Skorikov, N.A, et al. “Mechanism of magnetic moment collapse under pressure in ferropericlase..” Journal of Physics Condensed Matter, vol. 27, no. 27, Jun. 2015, p. 275501. https://doi.org/10.1088/0953-8984/27/27/275501.