Epitaxial thin-film Pd_(1-x)Fe_(x) alloy: a tunable ferromagnet for superconducting spintronics  

作　　者：Alireza Esmaeili Igor V.Yanilkin Amir I.Gumarov Iskander R.Vakhitov Bulat F.Gabbasov Roman V.Yusupov Dmitriy A.Tatarsky Lenar R.Tagirov 

机构地区：[1]Institute of Physics,Kazan Federal University,Kazan 420008,Russia [2]Institute for Physics of Microstructures of RAS,Nizhny Novgorod 603950,Russia [3]Zavoisky Physical-Technical Institute,FRC Kazan Scientific Center of RAS,Kazan 420029,Russia

出　　处：《Science China Materials》2021年第5期1246-1255,共10页中国科学（材料科学（英文版）

基　　金：supported by the RSF(18-12-00459)。

摘　　要：Thin epitaxial films of the palladium-rich Pd_(1-x)Fe_(x) alloy were synthesized and extensively studied as a tunable ferromagnetic material for superconducting spintronics. The(001)-oriented Mg O single-crystal substrate and the composition range of x = 0.01–0.07 were chosen to support the epitaxial growth and provide the films with magnetic properties spanning from very soft ferromagnet for memory applications to intermediately soft and moderately hard for the programmable logic and circuit biasing, respectively. Dependences of the saturation magnetization, Curie temperature and three magnetic anisotropy constants on the iron content x were obtained for the first time from the analyses of the magnetometry and ferromagnetic resonance data. The experimental results were discussed based on existing theories of dilute ferromagnetic alloys. Simulation of the hysteresis loops within the Stoner-Wohlfarth model indicates the predominant coherent magnetic moment rotation at cryogenic temperatures. The obtained results were compiled in a database of magnetic properties of a palladium-iron alloy in a single-crystal thin-film form considered as a material for superconducting spintronics.

关 键 词：ALLOY FERROMAGNETIC palladium 

分 类 号：TB383.2[一般工业技术—材料科学与工程]