Effect of Sintering Temperature on Structural Properties of Cd doped Co-Zn Ferrite

The temperature at which the ferrite is sintered critically depends on the chemical composition. The electromagnetic properties are dependent on the densification and microstructure. Substitutions and addition of sintering aids is an attractive approach to enhance the electromagnetic properties. Various compositions in the system Ni1-x-yCuxZnyFe2O4 were investigated. Cu is used to decrease the sintering temperature. However, Cu decreases the resistivity, which is not desirable for its high frequency applications. So, optimization of Cu content is necessary. Different ranges of electromagnetic properties have been reported with various Zn concentrations. Optimization of Zn concentration with respect to Ni and Cu is essential to achieve desirable electromagnetic properties. Influence of rare earths has also been reported. The investigations showed an improved densification in Ni-Zn and increased permeability in Cu-Zn ferrite by Sm substitution. La substitutions showed an improved resistivity in Ni-Zn ferrites. Similarly, these substitutions may improve the electromagnetic properties in Ni-Cu-Zn ferrites. V2O5, MoO3 and Bi2O3 were reported to be the most widely used sintering additives. Bi2O3-WO3 and V2O5-MoO3 mixed additives were better than the individual additives in Ni-Cu-Zn ferrite, respectively. Further research is needed on the mixed sintering additivesKeywords: Additives; Ferrite preparation; Ni-Cu-Zn ferrite; Rare Earth; Sintering aids.© 2013 JSR Publications. ISSN: 2070-0237 (Print); 2070-0245 (Online). All rights reserved.doi: http://dx.doi.org/10.3329/jsr.v5i2.12434 J. Sci. Res. 5 (2), 215-233 (2013)

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Size Controlled Preparation and Effect of Sintering Temperature on the Structural Properties of Nanocrystalline Ceria-Lanthana Solid Solution

Materials Today Proceedings ◽

10.1016/j.matpr.2016.04.064 ◽

2016 ◽

Vol 3 (6) ◽

pp. 1712-1717 ◽

Cited By ~ 2

Author(s):

Pramila Patil ◽

D. Selvakumar ◽

N.S. Kumar

Keyword(s):

Solid Solution ◽

Structural Properties ◽

Sintering Temperature ◽

Nanocrystalline Ceria ◽

Controlled Preparation ◽

Size Controlled

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Low sintering temperature of Mg-Cu-Zn ferrite prepared by the citrate precursor method

Journal of the Iranian Chemical Society ◽

10.1007/bf03247214 ◽

2006 ◽

Vol 3 (3) ◽

pp. 242-246 ◽

Cited By ~ 6

Author(s):

Y. Atassi ◽

M. Tally

Keyword(s):

Sintering Temperature ◽

Precursor Method ◽

Zn Ferrite ◽

Low Sintering Temperature ◽

Citrate Precursor ◽

Citrate Precursor Method

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Microstructure and properties of Mg–Zn ferrite as a result of sintering temperature

Journal of the European Ceramic Society ◽

10.1016/s0955-2219(03)00386-8 ◽

2004 ◽

Vol 24 (6) ◽

pp. 1053-1056 ◽

Cited By ~ 20

Author(s):

Zbigniew Pȩdzich ◽

Mirosław M. Bućko ◽

Michał Królikowski ◽

Małgorzata Bakalarska ◽

Joanna Babiarz

Keyword(s):

Sintering Temperature ◽

Microstructure And Properties ◽

Zn Ferrite

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Effects of Milling Atmosphere and Increasing Sintering Temperature on the Magnetic Properties of Nanocrystalline Ni0.36Zn0.64Fe2O4

Journal of Nanomaterials ◽

10.1155/2015/615739 ◽

2015 ◽

Vol 2015 ◽

pp. 1-11 ◽

Cited By ~ 8

Author(s):

Abdollah Hajalilou ◽

Mansor Hashim ◽

Halimah Mohamed Kamari ◽

Mohamad Taghi Masoudi

Keyword(s):

Magnetic Properties ◽

Sintering Temperature ◽

Parallel Evolution ◽

High Energy ◽

High Energy Ball Mill ◽

Zn Ferrite ◽

Crystallite Sizes ◽

Energy Ball ◽

Xrd Patterns ◽

Fesem Micrographs

Nanocrystalline Ni0.36Zn0.64Fe2O4was synthesized by milling a powder mixture of Zn, NiO, and Fe2O3in a high-energy ball mill for 30 h under three different atmospheres of air, argon, and oxygen. After sintering the 30 h milled samples at 500°C, the XRD patterns suggested the formation of a single phase of Ni-Zn ferrite. The XRD results indicated the average crystallite sizes to be 15, 14, and 16 nm, respectively, for the 30 h milled samples in air, argon, and oxygen atmospheres sintered at 500°C. From the FeSEM micrographs, the average grain sizes of the mentioned samples were 83, 75, and 105 nm, respectively, which grew to 284, 243, and 302 nm after sintering to 900°C. A density of all the samples increased while a porosity decreased by elevating sintering temperature. The parallel evolution of changes in magnetic properties, due to microstructural variations with changes in the milling atmosphere and sintering temperature in the rage of 500–900°C with 100°C increments, is also studied in this work.

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