Anomalous Behavior of Coercivity in Ferromagnet/Antiferromagnet Bilayers

Autor:	Han Xf, Liu Hf, Ma Ql, Wang Sg, Wang L
Rok vydání:	2012
Předmět:	Materials science Condensed matter physics Magnetic domain Ferromagnetism Atomic force microscopy Antiferromagnetism Anomalous behavior Coercivity Spin (physics) Layer (electronics)
Zdroj:	Journal of Spintronics and Magnetic Nanomaterials. 1:47-51
ISSN:	2158-8678 2158-866X
Popis:	The dependence of exchange-bias field (HEB) and coercivity (HC) on the ferromagnetic (FM) layer thickness in CoFe/IrMn and CoFe/FeMn bilayers was investigated. The coercivity of the CoFe/IrMn bilayers is very sensitive to the IrMn (110) structure. Through inserting a thin antiferromagnetic (AFM) FeMn layer into the CoFe/IrMn interface, an obvious change in the coercivity behavior is observed. Our results show that the interfacial magnetic domains play a prominent effect on the exchange-bias field, but a negligible influence on the coercivity behavior, suggesting that the enhanced coercivity in FM/AFM exchange biased system comes from the irreversible spin rotation in the AFM layer near interface.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::979832d1ae735e6d70ae0f3a8a398d5b https://doi.org/10.1166/jsm.2012.1011 Zobrazit plný text záznamu