Magnetoresistance of magnetite
Magnetoresistance of magnetite
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DOI：
10.1063/1.120859
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发表时间：
1998-02-09
影响因子：
4
通讯作者：
Parker, FT
中科院分区：
文献类型：
--
作者：
Coey, JMD;Berkowitz, AE;Parker, FT
比较了Fe_3O_4多晶薄膜、粉末压块和单晶体的磁电阻行为。在薄膜和粉末压块中观察到的但在单晶中没有的在矫顽场处具有峰值的负磁阻是由于相邻晶粒的磁化的场致对准。这种效应与自旋极化电子的晶间输运有关。(C)1998年美国物理学会。
The magnetoresistance behavior of Fe3O4 in polycrystalline thin film, powder compact, and single-crystal form an compared. Negative magnetoresistance with peaks at the coercive field, observed in thin films and powder compacts but not in the single crystal, is due to field-induced alignment of the magnetization of contiguous grains. The effect is associated with intergranular transport of spin-polarized electrons. (C) 1998 American Institute of Physics.