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Magnetic, structural, electronic, and optical investigations of Ti1−xMnxO2 films

  • Sudesh Sharma (a1), Sujeet Chaudhary (a2) and Subhash Chand Kashyap (a2)


Observation of room temperature ferromagnetism (RTFM) is reported in polycrystalline thin films of Ti1−xMnxO2 (x = 0.10 and 0.15) synthesized by spray pyrolysis technique on fused quartz substrates. Our experimental results clearly suggest partial incorporation of manganese (Mn) in titanium dioxide (TiO2) lattice up to certain extent and rest of the Mn ions are consumed to form secondary Mn-related phase such as manganese oxide (Mn3O4). The observed weak ferromagnetic ordering at room temperature in the films is established to be due to incorporation of Mn in TiO2matrix rather than the presence of other secondary phases since none of the Mn or Ti/Mn oxide phase is ferromagnetic at room temperature. Bound magnetic polaron model is invoked to explain the observed ferromagnetism in these highly resistive films.


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Magnetic, structural, electronic, and optical investigations of Ti1−xMnxO2 films

  • Sudesh Sharma (a1), Sujeet Chaudhary (a2) and Subhash Chand Kashyap (a2)


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