Field step size and temperature effects on the character of the magnetostructural transformation in a Gd5Ge4 single crystal Lograsso, Thomas Ouyang, Zhong Schlagel, Deborah Pecharsky, Vitalij Gschneidner, Karl Schlagel, Deborah Lograsso, Thomas
dc.contributor.department Ames Laboratory 2018-02-13T14:32:18.000 2020-06-29T23:27:56Z 2020-06-29T23:27:56Z Mon Jan 01 00:00:00 UTC 2007 2013-09-23 2007-10-10
dc.description.abstract <p>The critical magnetic fields required to induce the magnetostructural transformation below ∼30 K in Gd<sub>5</sub>Ge<sub>4</sub> are dependent on the size of the magnetic-field step employed during isothermal measurements of magnetization: the smaller the step, the lower the critical field. The influence of the magnetic-field step size on the character of the magnetostructural transition in Gd<sub>5</sub>Ge<sub>4</sub> diminishes as temperature increases, nearly disappearing above ∼30 K. Decreasing the size of the field step also leads to the formation of multiple steps in the magnetization. The steps are reproducible in the same sample at low temperatures (below ∼9 K) but they become stochastic and irreproducible at high temperatures (above ∼20 K). The varying dynamics of both the magnetization and demagnetization processes is associated with approaching true equilibrium states and, therefore, reduction of the size of the magnetic-field step at low temperatures plays a role similar to the dominant role of thermal fluctuations at high temperatures. Similar phenomena are expected to occur in other martensiticlike systems, e.g., the manganites.</p>
dc.description.comments <p>This article is from <em>Physical Review B</em> 76, no. 13 (2007): 134406, doi:<a href="" target="_blank">10.1103/PhysRevB.76.134406</a>.</p>
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dc.identifier archive/
dc.identifier.articleid 1076
dc.identifier.contextkey 4613967
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath ameslab_pubs/79
dc.language.iso en
dc.source.bitstream archive/|||Sat Jan 15 01:55:26 UTC 2022
dc.source.uri 10.1103/PhysRevB.76.134406
dc.subject.disciplines Condensed Matter Physics
dc.subject.disciplines Metallurgy
dc.subject.keywords Materials Science and Engineering
dc.title Field step size and temperature effects on the character of the magnetostructural transformation in a Gd5Ge4 single crystal
dc.type article
dc.type.genre article
dspace.entity.type Publication
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relation.isAuthorOfPublication 220ce8a4-546b-4118-8d44-911799a0ffa1
relation.isOrgUnitOfPublication 25913818-6714-4be5-89a6-f70c8facdf7e
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