EXCHANGE-SPRING BEHAVIOR IN EPITAXIAL HARD/SOFT MAGNETIC BILAYERS
作者： Eric E. Fullerton , J. S. Jiang , M. Grimsditch , C. H. Sowers , S. D. Bader
DOI: 10.1103/PHYSREVB.58.12193
关键词:
摘要: We present results on the magnetic reversal process in epitaxial Sm-Co(11\ifmmode\bar\else\textasciimacron\fi{}00)/TM (TM=Fe,Co) bilayer films prepared via magnetron sputtering. The magnetically hard Sm-Co have 20-T uniaxial anisotropy and coercivities g3 T at room temperature, that double cooling, as determined by magnetometry. TM layers are exchange coupled to layer exhibit reversible demagnetization curves expected for an exchange-spring magnet. also numerical solutions of a one-dimensional model provide spin configuration each atomic layer. Comparison experimental with simulations indicates our behavior can be understood from intrinsic parameters soft layers. extended realistically estimate ultimate gain energy product potentially realized based hardening principle.
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