Development of magneto-dielectric materials based on Li-ferrite ceramics

Teo, M.L.S.; Kong, Ling Bing; Li, Z.W.; Lin, G. Q.; Gan, Yeow-Beng

doi:10.1016/j.jallcom.2007.05.082

Cited by 91 publications

(36 citation statements)

References 24 publications

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“…The dense structure of the MS sample, as confirmed by SEM result, indicates less air-holes, leading to the larger dielectric constants. Simultaneously, the MS sample show lower dielectric loss which can be attribute to rare possibility of Fe 2+ content in the materials [14][15][16]. In the MS process, the shorter sintering time restrain the evaporation of O 2− ions, and leading to the less chances of forming Fe 2+ content in the material.…”

Section: Volume 20mentioning

confidence: 99%

Microstructure and Electromagnetic Properties of Microwave Sintered CoCuZn Ferrites

Patankar¹

2013

ILCPA

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Co-Cu-Zn ferrite material has been extensively used in multilayer chip inductors because of their good electromagnetic properties at higher frequencies and low sintering temperatures. In this research work, a comparative study on Co-Cu-Zn ferrite prepared from two different routes is reported. The two different routes are conventional ceramic sintering method (CS) and is microwave sintered (MS) method. The former route is most commonly used while the latter one is now gaining popularity in sintering processes. The work highlights that the sintering temperature and time were significantly reduced from 4 h and 1250 °C for the CS process to 20 min and 900 °C for MS process. Moreover, microwave sintering also improves the physical and electromagnetic properties of ferrite .

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Section: Volume 20mentioning

confidence: 99%

Microstructure and Electromagnetic Properties of Microwave Sintered CoCuZn Ferrites

Patankar¹

2013

ILCPA

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“…Our recent studies indicate that ferrite ceramics can be used to develop magneto-dielectric materials. [4][5][6][7][8][9][10][11] Two key strategies have been employed to achieve desirable magnetodielectric properties based on ferrite ceramics. Firstly, it is necessary to find out suitable sintering aid with an appropriate content to improve the densification behavior of ferrite so that fully dense products can be obtained at a relatively low temperature, therefore, the sintered ferrite ceramics have sufficiently low dielectric loss tangents.…”

Section: Introductionmentioning

confidence: 99%

Rapid processing of ferrite ceramics with promising magneto-dielectric characteristics

Xiao

Wang

Liu³

et al. 2017

J. Adv. Dielect.

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O 4 , with the addition of 4 wt.% Bi 2 O 3 as sintering aid, were fabricated by using a simple one-step processing without involving the step of calcination. X-ray diffraction (XRD) results indicated that single phase ferrite ceramics can be achieved after sintering at 1000 C for 2 h. The samples demonstrated relative densities in the range of 97-99%. Desired magneto-dielectric properties have been approached by adjusting the sintering temperature and sintering time duration. This technique is believed to be applicable to other ceramic materials.

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“…Low temperature sintered NiCuZn ferrites are the most universal ferrite materials to produce MLCIs because of their relatively low sintering temperature and high resistivity with good performances in the high frequency range [1][2][3].Typical NiCuZn ferrites with a regular particle size have sintering temperatures above 1000 0 C. The usage of fine powder decreases the sintering temperature of ferrites. Fine powders can be prepared through various wetchemical methods like co-precipitation [4],hydrothermal synthesis [5] and sol-gel processes [6].…”

Section: Introductionmentioning

confidence: 99%