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Structural and Magnetic Properties of 57 Fe‐Doped TiO 2 and 57 Fe/Sn‐Codoped TiO 2 Prepared by a Soft‐Chemical Process
Author(s) -
Wang Yanjie,
Nomura Kiyoshi,
Liu Xin,
Rykov Alexandre I.,
Jin Changzi,
Liu Tao,
Wang Junhu
Publication year - 2016
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201501173
Subject(s) - chemistry , tin , anatase , ferromagnetism , titanium , raman spectroscopy , mössbauer spectroscopy , rutile , doping , analytical chemistry (journal) , magnetic moment , x ray crystallography , magnetization , magnetic hysteresis , inorganic chemistry , diffraction , crystallography , materials science , magnetic field , photocatalysis , biochemistry , physics , organic chemistry , chromatography , quantum mechanics , optics , condensed matter physics , catalysis , optoelectronics
A series of 57 Fe‐doped TiO 2 and 57 Fe/Sn‐codoped TiO 2 materials were prepared by a soft‐chemical solution process with various 57 Fe concentrations from 0.1 to 1.0 at.‐% and a fixed Sn concentration of 2.0 at.‐%. In this process, an aqueous H 2 O 2 solution reacts with iron and titanium or iron, tin, and titanium precursor compounds to produce peroxopolymetallic acids. The structures and magnetic properties of the products were characterized by magnetic‐moment measurements, X‐ray diffraction, and Raman and Mössbauer spectroscopy. The results showed that all samples consisted of a rutile phase (and a trace amount of anatase in 57 Fe‐TiO 2 ). All samples exhibited hysteresis loops in the M – H curves, which demonstrated the presence of room‐temperature ferromagnetism. In addition, their magnetic properties decreased with increasing degree of 57 Fe doping. Oxygen vacancies were considered to be responsible for the presence of ferromagnetism.