Temperature-dependent Faraday rotation and magnetization reorientation in cerium-substituted yttrium iron garnet thin films

Temperature-dependent Faraday rotation and magnetization reorientation in cerium-substituted yttrium iron garnet thin films

We report on the temperature dependence of the magnetic and magneto-optical properties in cerium-substituted yttrium iron garnet (Ce: YIG) thin films. Measurements of the Faraday rotation as a function of temperature show that the magnetic easy axis of thin Ce: YIG films reorients from in-plane to o...

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Bibliographic Details
Main Authors: Beran, Lukas, Ohnoutek, Lukas, Kucera, Miroslav, Antos, Roman, Veis, Martin, Lage, Enno, Quindeau, Andy, Sani, Sohrab Redjai, Dionne, Gerald F., Ross, Caroline A
Other Authors: Massachusetts Institute of Technology. Department of Materials Science and Engineering
Format: Article
Published: American Institute of Physics (AIP) 2017
Online Access:http://hdl.handle.net/1721.1/111953
https://orcid.org/0000-0002-3056-4822
https://orcid.org/0000-0001-9935-1107
https://orcid.org/0000-0003-2262-1249
Description
Summary:We report on the temperature dependence of the magnetic and magneto-optical properties in cerium-substituted yttrium iron garnet (Ce: YIG) thin films. Measurements of the Faraday rotation as a function of temperature show that the magnetic easy axis of thin Ce: YIG films reorients from in-plane to out-of-plane on cooling below -100 degrees C. We argue that the temperature-dependence of the magnetostriction and magnetocrystalline anisotropy of Ce: YIG is the dominant factor contributing to the change in easy axis direction, and we describe the changes in the magneto-optical spectra with temperature.

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