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Local-moment ferromagnetism and unusual magnetic domains in Fe 1 / 4 TaS 2 crystals

Local-moment ferromagnetism and unusual magnetic domains in Fe 1 / 4 TaS 2 crystals Single crystals of Fe 1 / 4 TaS 2 have been studied by using magneto-optical (MO) imaging and radio-frequency magnetic susceptibility, χ . Real-time MO images reveal unusual slow dynamics of dendritic domain formation, the details of which are strongly dependent upon magnetic and thermal history. Measurements of χ ( T ) show well-defined local-moment ferromagnetic transition at T ≈ 155 K as well as thermal hysteresis for 50 < T < 60 K . This temperature range corresponds to the domain-formation temperature as determined by MO. Together these observations provide strong evidence for local-moment ferromagnetism in Fe 1 / 4 TaS 2 crystals with large temperature-dependent magnetic anisotropy. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Physical Review B American Physical Society (APS)

Local-moment ferromagnetism and unusual magnetic domains in Fe 1 / 4 TaS 2 crystals

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References (4)

Publisher
American Physical Society (APS)
Copyright
Copyright © 2009 The American Physical Society
ISSN
1550-235X
DOI
10.1103/PhysRevB.80.024421
Publisher site
See Article on Publisher Site

Abstract

Single crystals of Fe 1 / 4 TaS 2 have been studied by using magneto-optical (MO) imaging and radio-frequency magnetic susceptibility, χ . Real-time MO images reveal unusual slow dynamics of dendritic domain formation, the details of which are strongly dependent upon magnetic and thermal history. Measurements of χ ( T ) show well-defined local-moment ferromagnetic transition at T ≈ 155 K as well as thermal hysteresis for 50 < T < 60 K . This temperature range corresponds to the domain-formation temperature as determined by MO. Together these observations provide strong evidence for local-moment ferromagnetism in Fe 1 / 4 TaS 2 crystals with large temperature-dependent magnetic anisotropy.

Journal

Physical Review B – American Physical Society (APS)

Published: Jul 1, 2009

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