CNR-SPIN Salerno and Dipartimento di Fisica ER Caianiello, Università degli Studi di Salerno, Fisciano (Sa) I-84084, Italy.
J Phys Condens Matter. 2013 May 1;25(17):176001. doi: 10.1088/0953-8984/25/17/176001. Epub 2013 Apr 3.
The magnetic properties of trilayers consisting of a diluted magnetic alloy, CuMn (Cu0.99Mn0.01), a soft ferromagnet, Py(≡Ni0.8Fe0.2), and an antiferromagnet, α-Fe2O3, were investigated. The samples, grown by UHV magnetron sputtering, were magnetically characterized in the temperature range T = 3-100 K. Typical exchange bias features, namely clear hysteresis cycle shifts and coercivity enhancements, were observed. Moreover the presence of an inverse bias, which had been already reported for spin glass-based structures, was also obtained in a well-defined range of temperatures and CuMn thicknesses.
研究了由稀释磁性合金 CuMn（Cu0.99Mn0.01）、软铁磁体 Py（≡Ni0.8Fe0.2）和反铁磁体 α-Fe2O3 组成的三层膜的磁性。通过 UHV 磁控溅射生长的样品在温度范围 T = 3-100 K 下进行了磁性表征。观察到了典型的交换偏置特征，即明显的磁滞回线偏移和矫顽力增强。此外，在确定的温度和 CuMn 厚度范围内，也获得了已经在自旋玻璃结构中报道的反偏置。
