Influence of thermal treatments on phase formation and magnetic behavior in metal transition doped TiO2

A.F. CABRERA; L. ERRICO; C. E. RODRIGUEZ TORRES; F. H. SÁNCHEZ

PHYSICA B - CONDENSED MATTER

Elsevier

Lugar: Amsterdam; Año: 2007 vol. 389 p. 103 - 106

0921-4526

Transition metal doped TiO2 samples, with nominal composition TM5(TiO2)95 (TM= Mn Fe, Co and Ni), were obtained by thermal treatment at 673, 773 and 973 K in air to study  the role of impurities in the origin of magnetism. X-Ray Diffraction experiments only detect the rutile phase in the 673 K thermally treated samples but evidence of other phases was detected by Mössbauer Spectroscopy and ac-susceptibility measurements. All samples presented magnetic behaviour. The estimated magnetic moments were lower than those obtained by ab initio calculations.Longitud: 4 páginas