X-ray Absorption at the Pr L1-edge in PrNiO3

被引：0

作者：

Mustre de Leon, J. ^{[1
]}

Acosta-Alejandro, M. ^{[4
]}

Medarde, M. ^{[2
]}

Montano, P. A. ^{[3
]}

机构：

[1] CINVESTAV, Dept Fis Aplicada, Merida 97310, Yucatan, Mexico

[2] Paul Scherrer Inst, Lab Dev & Methods, CH-5232 Villigen, Switzerland

[3] Univ Illinois, Dept Phys, Chicago, IL 60680 USA

[4] Univ Juarez Autonoma Tabasco, Div Acad Ciencias Basicas, Tabasco 86690, Mexico

来源：

JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM | 2009年 / 22卷 / 01期

关键词：

Microstrain; Metal-insulator transition; XANES; METAL-INSULATOR-TRANSITION; RNIO3; PEROVSKITES; CHARGE DISPROPORTIONATION; NEUTRON-DIFFRACTION; RARE-EARTH; SCATTERING;

D O I：

10.1007/s10948-008-0369-1

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

X-ray absorption near edge structure (XANES) measurements at the Pr L1-edge of PrNiO3 exhibit a change across the metal insulator transition. This structural change is consistent with the observation of a lattice distortion, inferred from the Ni K-edge XANES spectra. Theoretical calculations of the XANES show that the observed features of the spectra are consistent with the orthorhombic structure in the metallic phase and a monoclinic structure in the insulating phase. The presence of such distortion provides a unified view of the structural change concurrent with the metal-insulator transition in the whole family RNiO3 (R being a rare earth atom).

引用

页码：81 / 84

页数：4

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