Structural, Magnetic and Electrical Properties of the Slightly Doped Lanthanum Manganites

被引：1
|
作者：
Bulatov, A. R.
Bogdanova, Kh. G. [1 ]
Golenischev-Kutuzov, V. A.
Elokhina, L. V. [2 ]
Neifel'd, E. A. [2 ]
Korolev, A. V. [2 ]
机构：
[1] Russian Acad Sci, Zavoisky Phys Tech Inst, Kazan Sci Ctr, Inst Russian Acad Sci, Kazan 420029, Russia
[2] Ural Branch Russian Acad Sci, Inst Met Phys, Ekaterinburg, Russia
来源：
TRENDS IN MAGNETISM | 2011年 / 168-169卷
关键词：
Magnetism; structural; lattice; distortion; transition; colossal magnetoresistance; manganites; hypersound; electrical resistance;
D O I：
10.4028/www.scientific.net/SSP.168-169.481
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The temperature dependences of the transverse and longitudinal hypersound velocities at the frequencies (0.5-0.7) GHz were measured in the La1-xSrxMnO3 (x = 0.125; 0.15; 0.175) compositions. Structural phase transitions the position of which is confirmed by the electric resistance and magnetic measurements data for the same samples are observed. These results were analyzed within the model of the competing Jahn-Teller distortions and magnetic ordering. Anomalies in the behavior of the longitudinal hypersound velocities were related to the local Jahn-Teller distortions the suppression of which upon magnetic ordering is considered as a possible origin of a colossal magnetoresistance.
引用
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页码：481 / +
页数：2
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