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Absence of phase transition in a magnetic field in the Fe0.55Mn0.45TiO3 Ising spin glass
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics.
2007 (English)In: Journal of Magnetism and Magnetic Materials, ISSN 0304-8853, E-ISSN 1873-4766, Vol. 310, no 2, 1494-1499 p.Article in journal (Refereed) Published
Abstract [en]

We present dynamical magnetic properties in the presence of a static bias field on the 3d Ising spin glass (SG) Fe0.55Mn0.45TiO3. It exhibits critical dynamics only in zero field, suggesting that there is no Almeida–Thouless line for Ising SGs. Instead a dynamical crossover scenario, based on the real-space droplet picture, can explain the in-field magnetic properties. We also interpret the glassy nature of the field-cooled magnetization in accordance with the real-space picture.

Place, publisher, year, edition, pages
2007. Vol. 310, no 2, 1494-1499 p.
Keyword [en]
Spin glass, Critical dynamics, Droplet picture, AC susceptibility, Field-cooled magnetization
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:uu:diva-10181DOI: 10.1016/j.jmmm.2006.10.879ISI: 000247618700315OAI: oai:DiVA.org:uu-10181DiVA: diva2:37949
Available from: 2008-05-27 Created: 2008-05-27 Last updated: 2017-12-11Bibliographically approved

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Jönsson, Petra

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