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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.
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页码:1266 / 1271
页数:6
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