Abstract
We report here the structural and magnetic properties of Mn-doped TiO2 samples (0 ≤ Mn ≤ 0.06) prepared with a solid-state method. The cell parameters a and c increased with the increased Mn content, implying that Mn ions were substituted into the lattice of TiO2. The room-temperature M(H) loops showed ferromagnetism (FM) behavior for all samples. The magnetic moment per Mn atom decreased with the increased Mn content. However, our results demonstrate that the FM property is intrinsic to the TiO2 system and is not a result of any secondary magnetic phase or cluster formation. The magnetic properties of Ti1−xMnxO2 are discussed based on the competition between the antiferromagnetic superexchange coupling and the FM originating from interactions between Mn ions and oxygen vacancies and/or defects inserted in the TiO2 lattice.
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More From: Journal of Materials Science: Materials in Electronics
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