Spin States of Cobalt Ions in the Bulk and on the Surface of LaCoO3 Probed by X-ray Absorption, Emission, and Photoelectron Spectra

被引：4

作者：

Galakhov, V. R. ^{[1
]}

Udintseva, M. S. ^{[1
]}

Smirnov, D. A. ^{[2
]}

Makarova, A. A. ^{[3
]}

Kuepper, K. ^{[4
]}

机构：

[1] Russian Acad Sci, MN Mikheev Inst Met Phys, Ural Branch, Ekaterinburg 620108, Russia

[2] Tech Univ Dresden, Inst Solid State & Mat Phys, D-01062 Dresden, Germany

[3] Free Univ Berlin, Inst Chem & Biochem, Phys Chem, D-14195 Berlin, Germany

[4] Univ Osnabruck, Dept Phys, D-49076 Osnabruck, Germany

来源：

JETP LETTERS | 2023年 / 118卷 / 03期

关键词：

ELECTRONIC-STRUCTURE; TRANSITION; SPECTROSCOPY; METAL; LA1-XSRXCOO3;

D O I：

10.1134/S0021364023601586

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present X-ray photoelectron, Co L-2,L-3 and O K X-ray absorption, as well as Co K & beta;(1,3) X-ray emission spectroscopy results of studies of the spin states of trivalent cobalt ions in single-crystal cobaltite LaCoO3. We show that at room temperature, in the bulk of a LaCoO3 single crystal, Co3+ ions are in the low-spin state, while high-spin Co2+, high-spin Co3+, low-spin Co3+ , and probably also intermediate-spin Co3+ ions are localated on the surface.

引用

页码：189 / 194

页数：6

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