Magnetic anisotropy and phase transitions in single-crystal Tb5(Si2.2Ge1.8)

dc.contributor.author Lograsso, Thomas
dc.contributor.author Jiles, David
dc.contributor.author Han, M.
dc.contributor.author Snyder, J.
dc.contributor.author Schlagel, Deborah
dc.contributor.author Tang, W.
dc.contributor.author Lograsso, Thomas
dc.contributor.author Schlagel, Deborah
dc.contributor.author Jiles, David
dc.contributor.department Ames Laboratory
dc.date 2018-02-13T15:13:36.000
dc.date.accessioned 2020-06-29T23:17:37Z
dc.date.available 2020-06-29T23:17:37Z
dc.date.copyright Sat Jan 01 00:00:00 UTC 2005
dc.date.embargo 2013-09-25
dc.date.issued 2005-05-16
dc.description.abstract <p>The Tb<sub>5</sub>(Si<sub><em>x</em></sub>Ge<sub>4−<em>x</em></sub>) alloy system has many features in common with the Gd<sub>5</sub>(Si<sub><em>x</em></sub>Ge<sub>4−<em>x</em></sub>)system although it has a more complex magnetic and structural phase diagram. This paper reports on the magnetic anisotropy and magnetic phase transition of single-crystalTb<sub>5</sub>(Si<sub>2.2</sub>Ge<sub>1.8</sub>) which has been investigated by the measurements of <em>M</em>-<em>H</em> and <em>M</em>-<em>T</em> along the <em>a</em>, <em>b</em>, and <em>c</em> axes. The variation of 1/<em>χ</em> vs <em>T</em> indicates that there is a transition from paramagnetic to ferromagnetic at <em>T</em><sub><em>c</em></sub> = 110 K. Below this transition temperature <em>M</em>-<em>H</em>curves show very strong anisotropy, and it is believed that this is due to the complex spin configuration. <em>M</em>-<em>H</em> measurements at <em>T</em> = 110 K show that the <em>a</em> axis is the easy axis, and that the saturation magnetization is 200 emu/g. The <em>b</em> axis is the hard axis, which needs an external magnetic field much higher than 2 T to saturate the magnetization in that direction, indicating a high magnetocrystalline anisotropy. The <em>c</em> axis is of intermediate hardness. The magnetic properties of this material are therefore very different from those of the related Gd<sub>5</sub>Si<sub>2</sub>Ge<sub>2</sub> system, in which the <em>b</em> axis was found to be the easy axis and the magnitude of the anisotropy was smaller.</p>
dc.description.comments <p>Copyright 2005 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.</p> <p>This article is from <em>Journal of Applied Physics</em> 97 (2005): 10M313 and may be found at <a href="http://dx.doi.org/10.1063/1.1855196" target="_blank">http://dx.doi.org/10.1063/1.1855196</a>.</p>
dc.identifier archive/lib.dr.iastate.edu/ameslab_conf/22/
dc.identifier.articleid 1022
dc.identifier.contextkey 4629865
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath ameslab_conf/22
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/6597
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/ameslab_conf/22/2005_HanM_MagneticAnisotropyPhase.pdf|||Fri Jan 14 22:39:59 UTC 2022
dc.source.uri 10.1063/1.1855196
dc.subject.disciplines Condensed Matter Physics
dc.subject.disciplines Electrical and Computer Engineering
dc.subject.disciplines Metallurgy
dc.subject.keywords Materials Science and Engineering
dc.subject.keywords Electrical and Computer Engineering
dc.subject.keywords terbium alloys
dc.subject.keywords silicon alloys
dc.subject.keywords germanium alloys
dc.subject.keywords paramagnetic materials
dc.subject.keywords ferromagnetic materials
dc.subject.keywords magnetic anisotropy
dc.subject.keywords ferromagnetic-paramagnetic transitions
dc.subject.keywords magnetic hysteresis
dc.subject.keywords magnetic moments
dc.subject.keywords Curie temperature
dc.title Magnetic anisotropy and phase transitions in single-crystal Tb5(Si2.2Ge1.8)
dc.type article
dc.type.genre conference
dspace.entity.type Publication
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