Title :
Effects of Oxygen Compensation n Fe-Doped TiO2
Author :
Lee, H. ; Kim, S. ; Shim, I. ; Kim, C.
Author_Institution :
Kookmin Univ., Seoul
Abstract :
In this work, we have studied the effect of compensation for oxygen vacancies on the magnetic property in Fe-doped TiO2. For oxygen compensation, niobium (Nb+5) was co-doped with iron (Fe3+), and then the magnetic moment reduced to about half of uncompensated sample. It seems to indicate that the compensated oxygen lead antiferromagnetic coupling to be more enhanced.Magnetic properties were characterized by the vibrating sample magnetometer (VSM) and Mossbauer spectroscopy and the magnetic hysteresis loops measured at room temperature up to the field of 5 kOe.
Keywords :
Mossbauer effect; antiferromagnetism; ferromagnetism; iron; magnetic hysteresis; magnetic impurities; magnetic moments; magnetometers; niobium; semimagnetic semiconductors; titanium compounds; vacancies (crystal); Mossbauer spectroscopy; TiO2:Fe3+,Nb+5; VSM; antiferromagnetic coupling; diluted magnetic semiconductors; ferromagnetic behavior; magnetic hysteresis loops; magnetic moment; magnetic property; oxygen vacancies; room temperature; temperature 293 K to 298 K; vibrating sample magnetometer; Antiferromagnetic materials; Couplings; Iron; Magnetic moments; Magnetic properties; Magnetometers; Niobium; Oxygen; Spectroscopy; Temperature measurement;
Conference_Titel :
Magnetics Conference, 2006. INTERMAG 2006. IEEE International
Conference_Location :
San Diego, CA
Print_ISBN :
1-4244-1479-2
DOI :
10.1109/INTMAG.2006.376092
