Note: Vectorial-magneto optical Kerr effect technique combined with variable temperature and full angular range all in a single setup.

Rev Sci Instrum

Departamento de Física de la Materia Condensada and Instituto "Nicolás Cabrera," Universidad Autónoma de Madrid, 28049 Madrid, Spain.

Published: April 2015

AI Article Synopsis

  • The TRISTAN magnetometer is a versatile tool that can measure magnetization reversal processes across a broad range of temperatures (from 4 K to 500 K) and angles, without needing to adjust the apparatus during experiments.
  • It combines a vectorial magneto-optical Kerr effect (MOKE) bench with a cryostat, featuring a motorized sample holder that allows for precise angular measurement.
  • The capabilities of TRISTAN are demonstrated through experiments on a model system that includes both biaxial and uniaxial magnetic contributions, highlighting its effectiveness in quantitative magnetization analysis.

Article Abstract

Here, we report on a versatile full angular resolved/broad temperature range/vectorial magneto optical Kerr effect (MOKE) magnetometer, named TRISTAN. Its versatility relies on its capacity to probe temperature and angular dependencies of magnetization reversal processes without the need to do any intervention on the apparatus during measurements. The setup is a combination of a vectorial MOKE bench and a cryostat with optical access. The cryostat has a motorized rotatable sample holder with azimuthal correction. It allows for simultaneous and quantitative acquisition of the two in-plane magnetization components during the hysteresis loop at different temperatures from 4 K up to 500 K and in the whole angular range, without neither changing magnet orientation nor opening the cryostat. Measurements performed in a model system with competing collinear biaxial and uniaxial contributions are presented to illustrate its capabilities.

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http://dx.doi.org/10.1063/1.4919411DOI Listing

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