Perpendicular magnetic anisotropy of Pd/Co_(2)MnSi/NiFe_(2)O_(4)/Pd multilayers on F-mica substrates  

作　　者：Qingwang Bai Bin Guo Qin Yin Shuyun Wang 白青旺;郭斌;尹钦;王书运(School of Physics and Electronics,Shandong Normal University,Ji'nan 250358,China)

机构地区：[1]School of Physics and Electronics,Shandong Normal University,Ji'nan 250358,China

出　　处：《Chinese Physics B》2022年第1期568-572,共5页中国物理B（英文版）

基　　金：the Shandong Provincial Natural Science Foundation,China(Grant No.ZR2018MEM004).

摘　　要：Pd/Co_(2)MnSi(CMS)/NiFe_(2)O_(4)(NFO)/Pd multilayers were fabricated on F-mica substrate by magnetron sputtering.The best PMA performance of the multilayer structure Pd(3 nm)/CMS(5 nm)/NFO(0.8 nm)/Pd(3 nm)was obtained by adjusting the thickness of the CMS and NFO layers.F-mica substrate has a flatter surface than glass and Si/SiO_(2) substrate.The magnetic anisotropy energy density(K_(eff))of the sample deposited on F-mica substrates is 0.6711 Merg/cm^(3)(1 erg=10^(-7) J),which is about 30%higher than that of the multilayer films deposited on glass(0.475 Merg/cm^(3))and Si/SiO_(2)(0.511 Merg/cm^(3))substrates,and the R_(Hall) and H_(C) are also significantly increased.In this study,the NFO layer prepared by sputtering in the high purity Ar environment was exposed to the high purity O_(2) atmosphere for 5 min,which can effectively eliminate the oxygen loss and oxygen vacancy in NFO,ensuring enough Co-O orbital hybridization at the interface of CMS/NFO,and thus effectively improve the sample PMA.

关 键 词：perpendicular magnetic anisotropy Co_(2)MnSi ferrimagnetics NiFe_(2)O_(4) 

分 类 号：O469[理学—凝聚态物理]