Magnetic and electrical properties of TiO2:Nb thin films

作者：Yu Chang Feng^*; Sun Shih Jye; Chen Jian Ming

来源：Applied Surface Science, 2014, 292: 773-776.

DOI：10.1016/j.apsusc.2013.12.047

• TiO2:Nb
• Rapid thermal annealing
• Ferromagnetism
• Coulomb repulsion

This study investigated the electrical and especially the magnetic properties of Niobium (Nb) doped TiO2 (TiO2 :Nb) thin films. Experiments evidently present that both minimum of ferromagnetism and resistivity exist in a same Nb doping ratio (3.0%). The XPS experiments revealed that Nb doping simultaneously increases and compensates for oxygen vacancies. The proposed model explains magnetic and electrical properties by analyzing oxygen vacancies induced by vacuum annealing or by Nb doping.

• 出版日期2014-2-15