Mn ferrite

It is possible to systematically alter the net magnetic moment of ferrites by chemical substitutions. A very important industrial appHcation is the increase of the magnetic moment in mixed MnZn-ferrites and NiZn-ferrites. When Zn ions are introduced in Mn-ferrite or Ni-ferrite, these ions prefer to occupy A-sites. Because is nonmagnetic, the A-sublattice magnetization is reduced and consequendy the total net magnetic moment is increased. 

Chem. Ges. 42,2248,1909). The ferrites are synthesized from Fe203 and the oxide, hydroxide, or carbonate of one or more divalent metals, e.g. Ba, Zn, Mn, Ni, Co, Mg or Cu. The firing process must be carefully controlled to maintain the required state of oxidation. Mg-Mn ferrites have a square hysteresis loop BaO-fiFejOj is a hard , or permanent, magnetic material. 

A. Yang, C.N. Chinnasamy, J.M. Greneche, Y. Chen, S.D. Yoon, K. Hsu, C. Vittoria, V.G. Harris, Large tunability of Neel temperature by growth-rate-induced cation inversion in Mn-ferrite nanoparticles. Appl. Phys. Lett. 94, 113109 (2009)... 

Two of the most common methods for preparing highly dispersed iron oxide nanoparticles are thermal decomposition of iron organometallic compounds and co-precipitation of aqueous iron salts (chlorides, nitrates, etc) in basic media. On the one hand, one of the most representative syntheses within the first group is the one reported by Sun et al. to prepare nanoparticles of Fe, Co and Mn ferrites through the decomposition of the corresponding acetylacetonate precursors in benzyl ether in the presence of oleylamine and oleic acid. Since the final aim is to use the nanoparticles in... 

SAE G1800 F10004 3.40-3.7 C, 2.55 Si, 0.7 Mn Ferrite + pearlite 124 (18) - Miscellaneous soft iron castings in which strength is not a primary consideration... 

SAE G2500 F10005 3.2-3.S C, 2.20 Si, 0.8 Mn Ferrite + pearlite 173 (25) - — Small cylinder blocks, cylinder heads, pistons, clutch plates, transmission cases... 

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