Estimation of the exchange and crystalline field parameters at R sites in R/sub 2/Fe/sub 14/B compounds (R=Pr, Nd, Sm, Tb, Dy, Ho, Er and Tm)

The values of Fe-R exchange-field and crystalline-field parameters averaged over the f and g sites in R/sub 2/Fe/sub 14/B (R=Pr, Nd, Sm, Tb, Dy, Ho, Er, and Tm) are evaluated by calculations based on a series of experiments. The experimental data considered are the magnetization curves and the tempe...

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Bibliographic Details
Published in:IEEE (Institute of Electrical and Electronics Engineers) Transactions on Magnetics; (USA) 1989-09, Vol.25 (5), p.3443-3445
Main Authors: Zhu Yong, Zhao Tiesong, Jin Hanmin, Fuming Yang, Xie Jinqiang, Li Xinnen, Zhao Ruwen, de Boer, F.R.
Format: Article
Language:English
Subjects:
360202 - Ceramics, Cermets, & Refractories- Structure & Phase Studies
360204 - Ceramics, Cermets, & Refractories- Physical Properties
ANGULAR MOMENTUM
BORON COMPOUNDS
CALCULATION METHODS
Crystallization
DATA
DIAGRAMS
DYSPROSIUM COMPOUNDS
Eigenvalues and eigenfunctions
Electrons
ERBIUM COMPOUNDS
EXPERIMENTAL DATA
HOLMIUM COMPOUNDS
INFORMATION
Iron
IRON COMPOUNDS
Land surface temperature
Least squares methods
MAGNETIC PROPERTIES
MAGNETIZATION
MATERIALS SCIENCE
Neodymium
NEODYMIUM COMPOUNDS
NUMERICAL DATA
PARAMETRIC ANALYSIS
PARTICLE PROPERTIES
PHASE DIAGRAMS
PHYSICAL PROPERTIES
PRASEODYMIUM COMPOUNDS
RARE EARTH COMPOUNDS
SAMARIUM COMPOUNDS
Solid state circuits
SPIN
TEMPERATURE DEPENDENCE
Tensile stress
TERBIUM COMPOUNDS
THULIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
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Summary:The values of Fe-R exchange-field and crystalline-field parameters averaged over the f and g sites in R/sub 2/Fe/sub 14/B (R=Pr, Nd, Sm, Tb, Dy, Ho, Er, and Tm) are evaluated by calculations based on a series of experiments. The experimental data considered are the magnetization curves and the temperature dependence of the angle made by the magnetic easy axis with the c-axis. For the heavy compounds, the temperature dependence of the magnetic moment is also included. The spin-phase diagrams of (R/sub 1-x/R'/sub x/)/sub 2/Fe/sub 14/B ((R, R')=(Pr, Ho), (Nd, Ho)) systems are constructed experimentally. The phase diagrams of (R, R')=(Pr, Ho), (Nd, Pr), (Nd, Y), (Nd, Ho), (Er, Y), and (Er, Gd) systems, calculated by using the empirically fitted parameters, reproduce the experimental results well.< >
ISSN:0018-9464
1941-0069
DOI:10.1109/20.42329