Anomalous Behavior of Coercivity in Ferromagnet/Antiferromagnet Bilayers
Autor: | Han Xf, Liu Hf, Ma Ql, Wang Sg, Wang L |
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Rok vydání: | 2012 |
Předmět: | |
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 |
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