Magneto-optical measurement of anisotropy energy constants on amorphous rare-earth transition-metal alloys

Roger A. Hajjar, Feng Lei Zhou, Masud Mansuripur

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

Measurements of the magneto-optic polar Kerr effect are performed on samples with perpendicular magnetization using in-plane magnetic fields. The magnetic anistropy constants are then determined from these measurements. The applied in-plane magnetic field varies from -20 to 20 kOe. Samples are mounted in a temperature-controlled chamber whose temperature is varied in the range of 80-475 K. In the theoretical model the anisotropy energy is expressed as the sum of terms containing sin2 φ and sin4 φ with two anisotropy constants, K1 and K2, to be determined. By matching the theoretical curves with the experimental data, we obtain two functions α(T) and β(T), which are the normalized values of K 1(T) and K2(T) with respect to the saturation magnetization Ms(T).

Original languageEnglish (US)
Pages (from-to)5328-5330
Number of pages3
JournalJournal of Applied Physics
Volume67
Issue number9
DOIs
StatePublished - 1990

Fingerprint

optical measurement
rare earth elements
transition metals
magnetization
anisotropy
magneto-optics
Kerr effects
magnetic fields
chambers
saturation
temperature
energy
curves

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Magneto-optical measurement of anisotropy energy constants on amorphous rare-earth transition-metal alloys. / Hajjar, Roger A.; Zhou, Feng Lei; Mansuripur, Masud.

In: Journal of Applied Physics, Vol. 67, No. 9, 1990, p. 5328-5330.

Research output: Contribution to journalArticle

@article{7ee8782df0c34e828a5319a980588b55,
title = "Magneto-optical measurement of anisotropy energy constants on amorphous rare-earth transition-metal alloys",
abstract = "Measurements of the magneto-optic polar Kerr effect are performed on samples with perpendicular magnetization using in-plane magnetic fields. The magnetic anistropy constants are then determined from these measurements. The applied in-plane magnetic field varies from -20 to 20 kOe. Samples are mounted in a temperature-controlled chamber whose temperature is varied in the range of 80-475 K. In the theoretical model the anisotropy energy is expressed as the sum of terms containing sin2 φ and sin4 φ with two anisotropy constants, K1 and K2, to be determined. By matching the theoretical curves with the experimental data, we obtain two functions α(T) and β(T), which are the normalized values of K 1(T) and K2(T) with respect to the saturation magnetization Ms(T).",
author = "Hajjar, {Roger A.} and Zhou, {Feng Lei} and Masud Mansuripur",
year = "1990",
doi = "10.1063/1.344600",
language = "English (US)",
volume = "67",
pages = "5328--5330",
journal = "Journal of Applied Physics",
issn = "0021-8979",
publisher = "American Institute of Physics Publising LLC",
number = "9",

}

TY - JOUR

T1 - Magneto-optical measurement of anisotropy energy constants on amorphous rare-earth transition-metal alloys

AU - Hajjar, Roger A.

AU - Zhou, Feng Lei

AU - Mansuripur, Masud

PY - 1990

Y1 - 1990

N2 - Measurements of the magneto-optic polar Kerr effect are performed on samples with perpendicular magnetization using in-plane magnetic fields. The magnetic anistropy constants are then determined from these measurements. The applied in-plane magnetic field varies from -20 to 20 kOe. Samples are mounted in a temperature-controlled chamber whose temperature is varied in the range of 80-475 K. In the theoretical model the anisotropy energy is expressed as the sum of terms containing sin2 φ and sin4 φ with two anisotropy constants, K1 and K2, to be determined. By matching the theoretical curves with the experimental data, we obtain two functions α(T) and β(T), which are the normalized values of K 1(T) and K2(T) with respect to the saturation magnetization Ms(T).

AB - Measurements of the magneto-optic polar Kerr effect are performed on samples with perpendicular magnetization using in-plane magnetic fields. The magnetic anistropy constants are then determined from these measurements. The applied in-plane magnetic field varies from -20 to 20 kOe. Samples are mounted in a temperature-controlled chamber whose temperature is varied in the range of 80-475 K. In the theoretical model the anisotropy energy is expressed as the sum of terms containing sin2 φ and sin4 φ with two anisotropy constants, K1 and K2, to be determined. By matching the theoretical curves with the experimental data, we obtain two functions α(T) and β(T), which are the normalized values of K 1(T) and K2(T) with respect to the saturation magnetization Ms(T).

UR - http://www.scopus.com/inward/record.url?scp=0038000490&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0038000490&partnerID=8YFLogxK

U2 - 10.1063/1.344600

DO - 10.1063/1.344600

M3 - Article

AN - SCOPUS:0038000490

VL - 67

SP - 5328

EP - 5330

JO - Journal of Applied Physics

JF - Journal of Applied Physics

SN - 0021-8979

IS - 9

ER -