Open AccessDETERMINATION OF THE ANISOTROPY CONSTANTS Ku AND K1 OF GARNET BUBBLE FILMS BY MEASURING TORQUE CURVES
Author(s) -
Tang Gui-de,
Han Bao-Shan
Publication year - 1990
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.39.479
Subject(s) - magnetocrystalline anisotropy , materials science , torque , anisotropy , bubble , constant (computer programming) , substrate (aquarium) , condensed matter physics , magnetic anisotropy , mechanics , optics , thermodynamics , physics , magnetization , magnetic field , computer science , oceanography , quantum mechanics , programming language , geology
The dependence of the magnetic torque of single crystal GGG (Gd3Ga5O12) substrates on their geometry and some related physical parameters were studied. A method was proposed to deduce the substrate contribution in determining the uniaxial anisotropy constant Ku and magnetocrystalline one K1. Both Ku and K1 can be acquired from the magnetic torque curves by employing the two-variable regression and using computer. As example, the measured curves of Ku and K1 as a function of temperature were presented.