Magnetic and transport properties of Gd0.9A0.1CoO3-δ (A = Ba, Sr)

被引:4
|
作者
Kazak, N. V. [1 ]
Ivanova, N. B. [2 ]
Michel, C. R. [3 ]
Ovchinnikov, S. G. [1 ,4 ]
Pashkevich, Yu. G. [5 ]
Balaev, A. D. [1 ]
Bondarenko, G. V. [1 ]
机构
[1] Russian Acad Sci, Kirensky Inst Phys, Siberian Branch, Krasnoyarsk 660036, Russia
[2] Siberian Fed Univ, Polytech Inst, Krasnoyarsk 660074, Russia
[3] Univ Guadalajara, CUCEI, Dept Fis, Guadalajara 44430, Jalisco, Mexico
[4] Siberian Fed Univ, Inst Nat & Humanitary Res, Krasnoyarsk 660041, Russia
[5] AA Galkin Donetsk Phystech Natl Acad Sci Ukraine, UA-83114 Donetsk, Ukraine
基金
俄罗斯基础研究基金会;
关键词
Perovskite structure; Doped cobaltite; Magnetic susceptibility; Metal-insulator transition; PR; LA; LN; TRANSITION; SPIN; EU; SM; ND;
D O I
10.1016/j.jmmm.2008.11.087
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The X-ray diffraction, magnetization and electrical conductivity measurements for Gd(0.9)A(0.1)CoO(3-delta) (A = Ba, Sr) have been made. The complicated magnetic behavior, including the paramagnetic-ferromagnetic-antiferromagnetic and paramagnetic-ferromagnetic transitions, was found for Ba- and Sr-doped samples. The gradual insulator-metal transitions were observed in a wide temperature range T = 600-800 K. The complex magnetic and transport data could be explained on the basis of the structural phase separation. (C) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码:1266 / 1271
页数:6
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