Spin glass behavior and non-ergodicity in amorphous iron-boron alloys |
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| Authors: | D.J. Webb S.M. Bhagat K. Moorjani T.O. Poehler F.G. Satkiewicz |
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| Affiliation: | Dept. of Physics and Astronomy, Univ. of Maryland, College Park, MD 20742 U.S.A.;The Johns Hopkins University Applied Physics Laboratory John Hopkins Road Laurel, Maryland 20707, U.S.A. |
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| Abstract: | We report FMR measurements on amorphous FexB1-x thin films with x=0.47, 0.49 and 0.53. At low T we observe anomalies characteristic of the FM-SG transition. In addition, in the 0.47 and 0.49 alloys the resonance field, below ～80K, depends upon the rate of cooling. We suggest that this behavior is symptomatic of non-ergodicity in the spin glass state. |
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