Structural and insulator-to-metal phase transition at 50 GPa in GdMnO3

被引：27

作者：

Oliveira, J. ^{[1
,2
]}

Moreira, J. Agostinho ^{[1
,2
]}

Almeida, A. ^{[1
,2
]}

Rodrigues, V. H. ^{[3
]}

Costa, M. M. R. ^{[3
]}

Tavares, P. B. ^{[4
]}

Bouvier, P. ^{[5
,6
]}

Guennou, M. ^{[5
]}

Kreisel, J. ^{[5
]}

机构：

[1] Univ Porto, Fac Ciencias, Dept Fis & Astron, IFIMUP, P-4169007 Oporto, Portugal

[2] Univ Porto, Fac Ciencias, Dept Fis & Astron, IN Inst Nanosci & Nanotechnol, P-4169007 Oporto, Portugal

[3] Univ Coimbra, Dept Fis, Fac Ciencias & Tecnol, CEMDRX, P-3004516 Coimbra, Portugal

[4] Univ Tras Os Montes & Alto Douro, Ctr Quim, P-5001801 Vila Real, Portugal

[5] MINATEC, Grenoble Inst Technol, CNRS, Mat & Genie Phys Lab, F-38016 Grenoble, France

[6] European Synchrotron Radiat Facil, F-38043 Grenoble, France

来源：

PHYSICAL REVIEW B | 2012年 / 85卷 / 05期

关键词：

D O I：

10.1103/PhysRevB.85.052101

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We present a study of the effect of very high pressure on the orthorhombic perovskite GdMnO3 by Raman spectroscopy and synchrotron x-ray diffraction up to 53 GPa. The experimental results yield a structural and insulator-to-metal phase transition close to 50 GPa, from an orthorhombic to a metrically cubic structure. The phase transition is of first order with a pressure hysteresis of about 6 GPa. The observed behavior under very high pressure might well be a general feature in rare-earth manganites.

引用

页数：5

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