CHANGE OF WALL TOPOGRAPHY IN SOFT FERRITES BY ISOTROPIC AND ANISOTROPIC EXTERNAL PRESSURES

被引:6
作者
LOAEC, J [1 ]
LEFLOCH, M [1 ]
GLOBUS, A [1 ]
机构
[1] CNRS,EQUIPE RECH MAT MAGNET,1 PL A BRIAND,F-92190 BELLEVUE,FRANCE
关键词
D O I
10.1109/TMAG.1979.1060528
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
Polycrystalline toroidal samples of soft ferrites have been submitted successively to hydrostatic and uniaxial pressures. The influence of these stresses on the initial susceptibility and the frequency spectrum is studied. Uniaxial pressures applied along the director circles of the toroid produce no effect on these parameters whereas uniaxial pressures directed along the generating lines and hydrostatic pressures involve a decrease of the initial susceptibility and an increase of the frequency relaxation. An interpretation of these phenomena is given, considering that these materials have four easy axis and negative magnetostriction. The domain walls prealigned along the director circles after thermal demagnetization align themselves along the easy axis the nearest to that of the local stress, changing the initial wall topography. © 1979 IEEE
引用
收藏
页码:1861 / 1863
页数:3
相关论文
共 11 条
[1]   DOMAIN PATTERN IN SILICON-IRON UNDER STRESS [J].
DIJKSTRA, LJ ;
MARTIUS, UM .
REVIEWS OF MODERN PHYSICS, 1953, 25 (01) :146-150
[2]  
EPAIN E, 1961, PUBLICATIONS SCI TEC, P37
[3]   INITIAL SUSCEPTIBILITY OF FERRIMAGNETIC MATERIALS AND TOPOGRAPHY OF DOMAIN WALLS [J].
GLOBUS, A ;
DUPLEX, P .
PHYSICA STATUS SOLIDI, 1969, 31 (02) :765-&
[4]  
GLOBUS A, 1962, CR HEBD ACAD SCI, V255, P1709
[5]  
Globus A., 1977, J PHYS C SOLID STATE, V1, P1
[6]  
GLOBUS A, 1963, THESIS PARIS
[7]   EFFECT OF HYDROSTATIC-PRESSURE ON SUSCEPTIBILITY FREQUENCY-SPECTRUM OF POLYCRYSTALLINE MN-ZN AND NI-ZN FERRITES [J].
LOAEC, J ;
LEFLOCH, M ;
JOHANNIN, P .
IEEE TRANSACTIONS ON MAGNETICS, 1978, 14 (05) :915-917
[8]   EFFECT OF HYDROSTATIC-PRESSURE ON MAGNETIZATION MECHANISMS IN NI-ZN FERRITE [J].
LOAEC, J ;
GLOBUS, A ;
LEFLOCH, M ;
JOHANNIN, P .
IEEE TRANSACTIONS ON MAGNETICS, 1975, 11 (05) :1320-1322
[9]  
LOAEC J, 1978, THESIS U BRETAGNE
[10]   MAGNETIC SUSCEPTIBILITY OF COMPRESSED ROCKS [J].
NAGATA, T .
JOURNAL OF GEOMAGNETISM AND GEOELECTRICITY, 1966, 18 (01) :73-&