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Ferromagnetism, glassiness, and metastability in a dilute dipolar-coupled magnet

Reich, D. H. and Rosenbaum, T. F. and Aeppli, G. and Guggenheim, H. J. (1986) Ferromagnetism, glassiness, and metastability in a dilute dipolar-coupled magnet. Physical Review B, 34 (7). pp. 4956-4958. ISSN 1098-0121. doi:10.1103/PhysRevB.34.4956.

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We have measured the ac magnetic susceptibility of the model dilute dipolar-coupled Ising system LiHo_xY_(1−x)F_4. The x=0.46 material displays an ordinary ferromagnetic transition, while the x=0.045 and 0.167 samples are two very different magnetic glasses. Thermal relaxation times are more than five times longer for x=0.167 than for x=0.045. In addition, the more concentrated glass shows history dependence and metastability upon field cooling.

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Additional Information:© 1986 The American Physical Society. Received 30 July 1986. We thank R. N. Bhatt, D. Huse, G. F. Mazenko, S. R. Nagel, and A. Ogielski for helpful discussions. Two of us (T.F.R. and G.A.) are grateful to the Aspen Center of Physics where part of the research was performed. The work at The University of Chicago was supported by the National Science Foundation Materials Research Laboratory under Grant No. 82-16892 and a Joseph H. DeFrees Grant from Research Corporation. One of us (T.F.R.) acknowledges support from the Alfred P. Sloan Foundation.
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Research CorporationJoseph H. Defrees grant
Alfred P. Sloan FoundationUNSPECIFIED
Issue or Number:7
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ID Code:47035
Deposited By: George Porter
Deposited On:09 Jul 2014 14:19
Last Modified:10 Nov 2021 17:33

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