Susceptibility Characterization of Phase Transition in Ti0.2Fe2.8O4 Ferrite

✍ Scribed by Flores, A.G. ;Raposo, V. ;I�iguez, J. ;Garc�a-Beneytez, J.M. ;Arcas, J. ;V�zquez, M.

• Publisher: John Wiley and Sons
• Year: 2002
• Tongue: English
• Weight: 108 KB
• Volume: 191
• Category: Article
• ISSN: 0031-8965
• DOI: 10.1002/1521-396x(200206)191:2<555::aid-pssa555>3.0.co;2-9

✦ Synopsis

Titanomagnetite Ti 0.2 Fe 2.8 O 4 has been prepared by floating zone technique and its single crystal spinel structure confirmed by the inductively coupled plasma spectrometry method. Its magnetic behavior and its temperature dependence have been determined by VSM magnetometry. Particular attention has been paid to the measurements around the order temperature. This type of magnetic study has been performed in other ferrites such as nickel ferrite, but there is no previous result for this single crystal ferrite-like material. An analysis of the results using modified Arrot plots and the Kouvel-Fisher method has allowed us to evaluate the Curie temperature and the critical exponents for the spontaneous magnetization, b, and the zero field susceptibility, g. Critical exponents obtained suggest that the short-range interactions dominate in the critical region.