Volume 35, Number 3 (Journal of Advanced Materials-Fall 2016)                   jame 2016, 35(3): 81-94 | Back to browse issues page



DOI: 10.18869/acadpub.jame.35.3.81

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Mohammadi Benehi S, Manouchehri S, Yousefi M. The Effect of Magnesium Substitution and Sintering Temperature on the Structural and Magnetic Properties of Manganese- Magnesium Ferrite. jame. 2016; 35 (3) :81-94
URL: http://jame.iut.ac.ir/article-1-858-en.html

Department of Physics, Faculty of Applied Science, Malek-Ashtar University, Shahin Shahr, Isfahan
Abstract:   (1056 Views)

Magnesium-manganese ferrite nanopowders (MgxMn1-xFe2O4, x=0.0 up to 1 with step 0.2) were prepared by coprecipitation method. The as-prepared samples were pressed with hydrolic press to form a pellet and were sintered in 900, 1050 and 1250˚C. Scanning Tunneling Microscope (STM) images showed the particle size of powders about 17 nm. The X-ray patterns confirmed the formation of cubic single phase spinel structure in samples sintered at 1250˚C. Substituting Mg2+ with Mn2+ in these samples, the lattice parameter decreased from 8.49 to 8.35Å and magnetization saturation decreased from 74.7 to 21.2emu/g. Also, coercity (HC ) increased from 5 to 23Oe and Curie temperature (TC ) increased from 269 to 392˚C. Samples with x= 0.2, 0.4, 0.6 sintered at 1250 ˚C, because of their magnetic properties, can be recommended for hyperthermia applications and for phase shifters.

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Type of Study: Research | Subject: General
Received: 2016/12/20 | Accepted: 2016/12/20 | Published: 2016/12/20

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