Rotating analyzer magneto-optic spectroscopy

Liang Yao Chen; John A. Woollam

doi:10.1117/12.962897

Rotating analyzer magneto-optic spectroscopy

Liang Yao Chen, John A. Woollam

Research output: Contribution to journal › Article › peer-review

7 Scopus citations

Abstract

We describe a system for measuring magneto-optical spectra in the 1.5-6-eV photon energy range using a rotating analyzer technique. The measurements are done at a near normal incident angle of less than 2 degrees. A stepping motor with 400 steps per revolution is used to control the analyzer azimuthal angle. After Fourier transformation, the magneto-optical parameter of polar Kerr rotation angle, θ_Kis obtained. Magnetic field and spectral scanning, as well as data processing,’ are totally controlled by a microcomputer. The mechanical and electrical design, alignment, calibration, and error reduction techniques for this sytem are discussed in detail. Application of this system is illustrated for compositionally modulated amorphous (Dy/Co) multi-layer films.

Original language	English (US)
Pages (from-to)	267-277
Number of pages	11
Journal	Proceedings of SPIE - The International Society for Optical Engineering
Volume	1166
DOIs	https://doi.org/10.1117/12.962897
State	Published - Jan 25 1990
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Computer Science Applications
Applied Mathematics
Electrical and Electronic Engineering

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10.1117/12.962897

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title = "Rotating analyzer magneto-optic spectroscopy",

abstract = "We describe a system for measuring magneto-optical spectra in the 1.5-6-eV photon energy range using a rotating analyzer technique. The measurements are done at a near normal incident angle of less than 2 degrees. A stepping motor with 400 steps per revolution is used to control the analyzer azimuthal angle. After Fourier transformation, the magneto-optical parameter of polar Kerr rotation angle, θKis obtained. Magnetic field and spectral scanning, as well as data processing,{\textquoteright} are totally controlled by a microcomputer. The mechanical and electrical design, alignment, calibration, and error reduction techniques for this sytem are discussed in detail. Application of this system is illustrated for compositionally modulated amorphous (Dy/Co) multi-layer films.",

author = "Chen, {Liang Yao} and Woollam, {John A.}",

note = "Funding Information: Research supported by National Science Foundation Grant DMR 8605367.",

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doi = "10.1117/12.962897",

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AU - Chen, Liang Yao

AU - Woollam, John A.

N1 - Funding Information: Research supported by National Science Foundation Grant DMR 8605367.

PY - 1990/1/25

Y1 - 1990/1/25

N2 - We describe a system for measuring magneto-optical spectra in the 1.5-6-eV photon energy range using a rotating analyzer technique. The measurements are done at a near normal incident angle of less than 2 degrees. A stepping motor with 400 steps per revolution is used to control the analyzer azimuthal angle. After Fourier transformation, the magneto-optical parameter of polar Kerr rotation angle, θKis obtained. Magnetic field and spectral scanning, as well as data processing,’ are totally controlled by a microcomputer. The mechanical and electrical design, alignment, calibration, and error reduction techniques for this sytem are discussed in detail. Application of this system is illustrated for compositionally modulated amorphous (Dy/Co) multi-layer films.

AB - We describe a system for measuring magneto-optical spectra in the 1.5-6-eV photon energy range using a rotating analyzer technique. The measurements are done at a near normal incident angle of less than 2 degrees. A stepping motor with 400 steps per revolution is used to control the analyzer azimuthal angle. After Fourier transformation, the magneto-optical parameter of polar Kerr rotation angle, θKis obtained. Magnetic field and spectral scanning, as well as data processing,’ are totally controlled by a microcomputer. The mechanical and electrical design, alignment, calibration, and error reduction techniques for this sytem are discussed in detail. Application of this system is illustrated for compositionally modulated amorphous (Dy/Co) multi-layer films.

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JO - Proceedings of SPIE - The International Society for Optical Engineering

JF - Proceedings of SPIE - The International Society for Optical Engineering

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Rotating analyzer magneto-optic spectroscopy

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