Inverted hysteresis and giant exchange bias in La0.7Sr0.3MnO3/SrRuO3 superlattices

被引：98
|
作者：
Ziese, M. [1 ]
Vrejoiu, I. [2 ]
Hesse, D. [2 ]
机构：
[1] Univ Leipzig, Div Superconduct & Magnetism, D-04103 Leipzig, Germany
[2] Max Planck Inst Microstruct Phys, D-06120 Halle, Germany
来源：
APPLIED PHYSICS LETTERS | 2010年 / 97卷 / 05期
关键词：
FILMS;
D O I：
10.1063/1.3470101
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The magnetization reversal mechanisms in a La0.7Sr0.3MnO3/SrRuO3 superlattice with ultrathin individual layers were studied. Due to the strong exchange bias between La0.7Sr0.3MnO3 and SrRuO3 layers inverted hysteresis loops were observed at temperatures below 62 K; at higher temperatures the superlattice showed an unconventional reversal mechanism with the magnetically hard SrRuO3 layers switching first on reducing the magnetic field from saturation. These observations were corroborated by micromagnetic simulations and were interpreted as arising from interfacial Bloch walls. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3470101]
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页数：3
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