Phonon spectra of cobaltite/manganites in strong magnetic fields

被引：2
|
作者：
Lewis, RA
Wang, YJ
Gao, F
Wang, XL
Dou, SX
机构：
[1] Univ Wollongong, Inst Superconducting & Elect Mat, Wollongong, NSW 2522, Australia
[2] Natl High Magnet Field Lab, Tallahassee, FL 32310 USA
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2004年 / 272卷
关键词：
A(Co1/2Mn1/2)O-3; far-infrared spectroscopy; phonon mode; magnetic field; metamagnetism;
D O I：
10.1016/j.jmmm.2003.11.250
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Far-infrared spectroscopy has been employed to determine phonon modes in the cobaltite/rnanganites A(Co1/2Mn1/2)O-3, where A is a lanthanide, in magnetic fields up to 17.5 T. The phonon energies in the compounds with A = La, Nd or Ho show little change with applied magnetic field. In contrast, with A = Yb, all the phonon modes exhibit a splitting when a magnetic field is applied. It is thought that this field dependence of the phonon energies is related to the metamagnetism of Yb(Co1/2Mn1/2)O-3. (C) 2003 Elsevier B.V. All rights reserved.
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页码：616 / 617
页数：2
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