Open AccessSTUDY OF THE MAGNETIC PROPERTIES OF THE YTTRIUMYTTERBIUM GARNET SYSTEM
Author(s) -
Guodong Li,
Zhai Ching-Yong,
Houwen Xin,
Chen Zhong-Rong
Publication year - 1960
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.16.281
Subject(s) - materials science , lattice constant , curie temperature , magnetization , ytterbium , yttrium , analytical chemistry (journal) , condensed matter physics , saturation (graph theory) , nuclear magnetic resonance , diffraction , ferromagnetism , magnetic field , chemistry , doping , physics , optics , metallurgy , mathematics , optoelectronics , quantum mechanics , chromatography , combinatorics , oxide
The yttrium-ytterbium (Y-Yb) garnet system Y3-xYbxFe3O12 was investigated at the compositions for which x=0, 0.75, 1.50, 2.25 and 3.00. The samples were prepared by the co-precipitation method and sintered 7 hours in oxygen atmosphere at 1350℃ or 1400℃. Lattice constants and theoretical densities were determined from X-ray diffraction data. It was found that the whole system consisted of a single phase with the garnet structure, and the lattice constant decreased linearly from 12.371? (Y3Fe5O12) to 12.297? (Yb3Fe5O12). The static hysteresis loop, the initial permeability at 500 Kc, the saturation magnetization between liquid-air temperature to the Curie point and the magnetic spectrum between 500 Mc and 3000 Mc were observed as a function of compositions. It was found that all the samples had high bulk densities ( > 90 % theoretical densities) and high resistivities (109—1010ohm-cm), and that the saturation magnetization Vs temperature curves had positive slopes at 10W temperature for x ≥ 1.50.