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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
Journal of the Korean Magnetics Society
Journal Basic Information
Journal DOI :
The Korean Magnetics Society
Editor in Chief :
Volume & Issues
Volume 5, Issue 6 - Dec 1995
Volume 5, Issue 5 - Oct 1995
Volume 5, Issue 4 - Aug 1995
Volume 5, Issue 3 - Jun 1995
Volume 5, Issue 2 - Apr 1995
Volume 5, Issue 1 - Feb 1995
Selecting the target year
Construction of the NQR Gaussmeter using Computer Interface
Journal of the Korean Magnetics Society, volume 5, issue 2, 1995, Pages 99~102
When the low magnetic field is applied to the synunetry axis of the axial synunetric electric field gradient tensor of the quadrupolar nucleus in the crystal with nuclear spin, I=1, two split resonance frequencies are observed by the Zeeman effect on the nuclear quadrupole resonance. The applied magnetic field is proportional to the difference of the two resonance frequencies and this proportionality constant for the
single crystal is 0.16 mT/kHz. The NQR spectrometer is interfaced with a personal computer from which the resonance signals are displayed and the value of magnetic field is obtained directly from the difference of the two resonance frequeocies. The lowestest measured magnetic field was 0.20 mT using this NQR technique.
Harmonic Analysis of Output Voltage in Synchronous Generator Taking Account of the Rotor Movement
Journal of the Korean Magnetics Society, volume 5, issue 2, 1995, Pages 103~108
We propose an analyzing method of the harmonics of output voltage in salient pole syochronous generator. In simulation, 2-D finite elerrent method is used for calculating the stator coil flux linkage considering the rotor movement. As an application of the proposed method, we calculated the harrronics of output voltage in the 150 kw class syochromus generator and compared it with the experirrental result.
The Magnetoelastic Coupling Coefficients in Cu/Ni/Cu thin Films
Journal of the Korean Magnetics Society, volume 5, issue 2, 1995, Pages 109~111
We suggest the phenominological model to determine the mangetoelastic coupling coefficient in Cu/Ni/Cu thin films by considering effective anisotropy energy with magnetic film thicknesses. This indirect determination can be applied other single crystalline systems.
Magnetoelastic Coupling Coefficients with Film Thicknesses in Ultrathin Films
Journal of the Korean Magnetics Society, volume 5, issue 2, 1995, Pages 112~114
We show physically and mathematically that magnetoelastic coupling coefficients can be predicted to have a form of
, sirniiarily in effective magnetic anisotropy energy in ultrathin films. The inverse thickness dependnce of magnetoelastic coupling coefficients implies lots of technical potentials.
A Behavior Magnetization Curves with Strains and Magnetoelastic Anisotropy Energy in Thin Films
Journal of the Korean Magnetics Society, volume 5, issue 2, 1995, Pages 115~118
We predict the magnetization curves with strains in thin films. It is possible to predict the magretoelastic ani¬sotropy erergy which generates the changes of the M-H curves in thin films. We show the prediction of M-H curves in case of isotropic films such as polycrystalline am amorphous thin films as well as single crystal cubic films.
Nonmagnetic Impurity Effect in
Chang Hoon Lee ; Cheol Eui Lee ;
Journal of the Korean Magnetics Society, volume 5, issue 2, 1995, Pages 119~122
We have measured the magnetic susceptibilities of a CuF/sub 2/ .center dot. 2H/sub 2/O sample by means of the SQUID(superconducting quantum interference device) at the magnetic fields of 0.5 T and 1 mT, in the temperature range 5-300 K. The sample was found to contain some nonmagnetic calcium and magnesium impurities by the elemental analysis. Our measurements differ from known results for pure Cu F/sub 2/ .center dot. 2H/sub 2/O and are well explained by the effect of the nonmagnetic impurities in our sample. The purity of our sample derived from the temperature dependence of the susceptibilities was compared with that from the elemental analysis.
The Jahn-Teller Effect in the Iron Copper Spinel
Journal of the Korean Magnetics Society, volume 5, issue 2, 1995, Pages 123~127
was accomplished by chemical rrethod and the crystallographic and magnetic properties have been studied by
spectroscopy and X-ray diffraction. The slowly cooled sample is found to have a tetragonal spinel structure with the lattice constant
spectra between the room temperature to the Curie temperature show that the
ions at octahedral site have the Jahn-Teller effect and the sample exhibits a structural phase transition near 630K due to the Jahn-Teller effect. The Curie temperature is found to be 690K and it is lower than that of ceramic method.
Magnetic Properties of Heteroepitaxial
Films Grown by a Pulsed Laser Ablation Technique
C. Y. Yang ; S. W. Kim ;
Journal of the Korean Magnetics Society, volume 5, issue 2, 1995, Pages 128~133
Yttrium Iron Garnet(
) films have been succsssfully grown on(111)GGG wafer by KrF excimer laser ablation of stoichiometric garnet target at the oxygen partial pressure,
, ranging 20 to 500 mTorr. During the deposition of the films the substrate temperature was maintained at
and the laser beam energy density at
. Microstructure, composition and magnetic properties of the films obtained were investigated as a function of oxygen pressure and thickness of the films. Epitaxial films with a dense and a smooth surface were reproducible at a low oxygen pressure. The films of
min thickness deposited at 20 mTorr of
of 1500 Gauss and
of 3 Oe after annealing at
for 20 minutes. As-deposited films of
in thickness exhibited the
of 1730 Gauss and
of 7 Oe. The magnetic properties of the films obtained were almost identical to those of a single crystal YIG.
Magnetic Properties of (Co-Cr)-P-Ni Alloy Thin Film
Journal of the Korean Magnetics Society, volume 5, issue 2, 1995, Pages 134~139
thin films for longitudinal magnetic recording media using OC magnetron sputtering system The variation of magnetic properties of
pseudo-ternary system with the composition was examined. We obtained the coercivity up to 1500 Oe. The coercivity iocrease could be ascribed to in-plane anisotropy enhaocement, grain size decrease, magnetic decoupling between particles. TEM micrographs showed that the grains were well-decoupled by the addition of phosphorous.