Study of electrical and dielectric behavior of Tb+3 substituted Y-type hexagonal ferrite

被引：54

作者：

Ali, Irshad ^{[1
]}

Shaheen, Nasira ^{[1
]}

Islam, M. U. ^{[1
]}

Irfan, Muhammad ^{[1
]}

Ashiq, Muhammad Naeem ^{[2
]}

Iqbal, M. Asif ^{[1
]}

Iftikhar, Aisha ^{[1
]}

机构：

[1] Bahauddin Zakariya Univ, Dept Phys, Multan, Pakistan

[2] Bahauddin Zakariya Univ, Inst Chem Sci, Multan, Pakistan

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2014年 / 617卷

关键词：

Nanocrystalline hexaferrite; Sol-gel auto-combustion; Drift mobility; Dielectric constant; AC conductivity; MAGNETIC-PROPERTIES; AC CONDUCTIVITY; TRANSPORT-PROPERTIES; PHYSICAL-PROPERTIES; NI SUBSTITUTION; BARIUM; ZN; CO; PERMEABILITY; HEXAFERRITES;

D O I：

10.1016/j.jallcom.2014.08.055

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A series of Y-type hexa-ferrites with composition, Ba2Zn2TbxFe12-xO22 (0 <= x <= 0.1), were synthesized by the sol-gel auto-combustion technique. The X-ray powder diffraction technique was employed to confirm the formation of Y-type phase. The dispersion in dielectric constant, dielectric loss, and sigma(ac) with frequency shows that the dispersion at low frequencies is due to Maxwell-Wagner type of interfacial polarization in general and the hopping of charge carrier between Fe2+ and Fe3+ ions. The substitution of Tb+3 inhibit the valence exchange of Fe+2 and Fe3+ and therefore the dielectric permittivity decreased. The DC resistivity increased from 7.29 x 10(7) to 4.73 x 10(8) Omega cm with increasing Tb-contents due to the unavailability of Fe3+ ions at octahedral sites. The enhanced resistivity of Y-type hexa ferrites makes them suitable candidates for multi-layer chip inductor applications. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：863 / 868

页数：6

共 43 条

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