Epitaxial La0.67Sr0.33MnO3 magnetic tunnel junctions

被引：49
作者：
Li, XW
Lu, Y
Gong, GQ
Xiao, G
Gupta, A
Lecoeur, P
Sun, JZ
Wang, YY
Dravid, VP
机构：
[1] IBM CORP,DIV RES,TJ WATSON RES CTR,YORKTOWN HTS,NY 10698
[2] NORTHWESTERN UNIV,DEPT MAT SCI & ENGN,EVANSTON,IL 60208
来源：
JOURNAL OF APPLIED PHYSICS | 1997年 / 81卷 / 08期
关键词：
D O I：
10.1063/1.364585
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We report the observation of a large magnetoresistance (83%) at low magnetic fields of tens of Oe at 4.2 K in the epitaxial trilayer junction structure, La0.67Sr0.33MnO3/SrTiO3/La0.67Sr0.33MnO3. The spin-polarization parameter of the manganite has been determined from the magnetoresistance value. The switching fields of the two magnetic layers were designed by using the magnetic shape anisotropy. By limiting the sweeping field in a low field range (similar to 100 Oe), we have achieved bistable resistive states at zero field, which is of potential interest for magnetoelectronic applications. (C) 1997 American Institute of Physics.
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页码：5509 / 5511
页数：3
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