2007
DOI: 10.1016/j.jmmm.2006.06.011
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Multiple antiferromagnet/ferromagnet interfaces as a probe of grain-size-dependent exchange bias in polycrystalline Co/Fe50Mn50

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Cited by 25 publications
(16 citation statements)
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References 53 publications
(84 reference statements)
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“…Due to the overlap of several hysteresis loops with different exchange bias fields, the hysteresis loop manifests itself as a multiple-stage reversal. Similar behavior has previously been observed 16,17 for the exchange biased system using FeMn, where it was claimed that the bottom interface normally has a better unidirectional anisotropy constant and the reason for that is that the top interface is rougher than the bottom interface. 16 For the case of FeCo-MnIr multilayers since J K acting on each interface is identical the loop manifests itself as a single-shifted loop.…”
Section: ͑2͒supporting
confidence: 83%
“…Due to the overlap of several hysteresis loops with different exchange bias fields, the hysteresis loop manifests itself as a multiple-stage reversal. Similar behavior has previously been observed 16,17 for the exchange biased system using FeMn, where it was claimed that the bottom interface normally has a better unidirectional anisotropy constant and the reason for that is that the top interface is rougher than the bottom interface. 16 For the case of FeCo-MnIr multilayers since J K acting on each interface is identical the loop manifests itself as a single-shifted loop.…”
Section: ͑2͒supporting
confidence: 83%
“…4, 6, 7(a), and 7(c) in Ref. 6) The similarity suggests that these dependences might be primarily an intrinsic property of Cu/FeMn structures and might not be affected much by the presence of a FM. Moreover, the intrinsic exchange bias 23 (i.e., observed in an AF without a FM) might be determining the properties and the underlying mechanism of the exchange bias in AF-FM bilayers.…”
mentioning
confidence: 63%
“…FeMn has a high T N (490 K for bulk FeMn, smaller for thin films) which results in exchange bias for bilayer FeMn-FM systems (e.g., FM ¼ NiFe) observed at and above room temperature. [3][4][5][6] It also had been shown that the presence of Cu next to FeMn modifies exchange bias in FeMn-FM systems. 7 Two types of samples are fabricated for these studies: The first consists of the 10-repeats superlattice of FeMn/Cu: Ta(5 nm)/[FeMn(t)/Cu(5 nm)] 10 /Ta(5 nm).…”
mentioning
confidence: 99%
“…This is the so-called ''pinning effect'' which is strongly affected by the AFM anisotropy and t AF . The pinning effect is strong above a critical t AF and weakened quite rapidly below that, eventually vanishes at another critical t AF [43][44][45]. Therefore, when t AF is lesser than t FM , the coercive fields at the first magnetization reversal are approximately identical and all close to the coercivity of pure FM bulk (see Fig.…”
Section: Resultsmentioning
confidence: 83%