Magnetic behavior of different modifications in low-fired Z-type polycrystalline hexaferrite

被引：8

作者：

Zhang, HG ^{[1
]}

Li, LT ^{[1
]}

Zhou, J ^{[1
]}

Ma, ZW ^{[1
]}

Wu, PG ^{[1
]}

Yue, ZX ^{[1
]}

Gui, ZL ^{[1
]}

机构：

[1] Tsing Hua Univ, Dept Mat Sci & Engn, State Key Lab New Ceram & Fine Proc, Beijing 100084, Peoples R China

来源：

MATERIALS LETTERS | 2000年 / 46卷 / 06期

关键词：

low-fired Z-type hexaferrite; modification; saturation magnetization; magnetocrystalline anisotropy constant; initial permeability;

D O I：

10.1016/S0167-577X(00)00194-4

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effect of Ph or Cu modification on the microstructural magnetic characteristics of Z-type hexaferrites sintered at relatively low temperature with compositions Ba3Co(1-x)CuxFe24O41 and Ba3(1-y) Pb3yCo2Fe24O41 are investigated. Experimental results show that the reduction of initial permeability mainly results from the decrease of the saturation magnetization and the increase;of magnetocrystalline anisotropy constant. Progressive studies confirm that the mechanisms involved in generating these magnetic behaviors are different for Pb- and Cu-modifred Z-type hexaferrites. Proper control of the sintering conditions is necessary to improve the quality of samples in order to get excellent magnetic properties. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：315 / 319

页数：5

共 7 条

[1] NEUTRON-DIFFRACTION STUDIES OF SOME HEXAGONAL FERRITES - BAFE12O19, BAMG2-W AND BACO2-W [J].

COLLOMB, A ;

WOLFERS, P ;

OBRADORS, X .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1986, 62 (01) :57-67

[2] NUCLEAR-MAGNETIC-RESONANCE IN BA3CO2FE24O41 FERRITE [J].

HANKIEWICZ, JH ;

PAJAK, Z ;

MURAKHOWSKI, AA .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1991, 101 (1-3) :134-136

[3] MICROSTRUCTURAL STUDY OF HEXAFERRITE RELATED-COMPOUNDS - Z(BA3CU2FE24O41) AND BAFE2O4 PHASE [J].

NICOLOPOULOS, S ;

VALLETREGI, M ;

GONZALEZCALBET, JM .

MATERIALS RESEARCH BULLETIN, 1990, 25 (05) :567-574

[4] RELATIONSHIP BETWEEN MICROSTRUCTURES AND MAGNETIC-PROPERTIES OF FERRITES CONTAINING CLOSED PORES [J].

RIKUKAWA, H .

IEEE TRANSACTIONS ON MAGNETICS, 1982, 18 (06) :1535-1537

[5]

SMIT J, 1959, PHYSICAL PROPERTIES

[6] Investigation of low-temperature sintering of Pb-modified Co2Z hexaferrite [J].

Zhang, HG ;

Zhou, J ;

Yue, ZX ;

Wu, PG ;

Li, LT ;

Gui, ZL .

MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY, 1999, 65 (03) :184-186

[7]

ZHANG HG, 1999, UNPUB IEEE T MAGN

← 1 →