{"title":"Interlayer Coupling and Magnetization Process in Co/Pt/Gd/Pt Multilayers","authors":"K. Takanashi;M. Ohba;H. Kurokawa;H. Fujimori","doi":"10.1109/TJMJ.1994.4565975","DOIUrl":null,"url":null,"abstract":"We investigated the magnetization process in Co/Pt/Gd/Pt multilayer films in order to study the indirect exchange coupling between Co and Gd through Pt. Normal spin-flop behavior was observed in samples with a Pt layer thickness t\n<inf>pt</inf>\n≪10Å. On the other hand, a novel hysteresis loop with \"negative coercivity\" was observed for t\n<inf>Pt</inf>\n≫10Å. This loop is considered to be due to the combined effect of the antiferromagnetic coupling between the Co and Gd layers, and the large magnetic anisotropy acting on the Co layer magnetization. The calculated magnetization curves agree well with experimental results. The antiferromagnetic coupling strength estimated from a comparison of calculations and experiment decays in an oscillating manner with increasing t\n<inf>Pt</inf>\n.","PeriodicalId":100647,"journal":{"name":"IEEE Translation Journal on Magnetics in Japan","volume":"9 6","pages":"164-170"},"PeriodicalIF":0.0000,"publicationDate":"1994-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1109/TJMJ.1994.4565975","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEEE Translation Journal on Magnetics in Japan","FirstCategoryId":"1085","ListUrlMain":"https://ieeexplore.ieee.org/document/4565975/","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 1
Abstract
We investigated the magnetization process in Co/Pt/Gd/Pt multilayer films in order to study the indirect exchange coupling between Co and Gd through Pt. Normal spin-flop behavior was observed in samples with a Pt layer thickness t
pt
≪10Å. On the other hand, a novel hysteresis loop with "negative coercivity" was observed for t
Pt
≫10Å. This loop is considered to be due to the combined effect of the antiferromagnetic coupling between the Co and Gd layers, and the large magnetic anisotropy acting on the Co layer magnetization. The calculated magnetization curves agree well with experimental results. The antiferromagnetic coupling strength estimated from a comparison of calculations and experiment decays in an oscillating manner with increasing t
Pt
.