Room temperature ferromagnetism in anatase Ti_(0.95)Cr_(0.05)O_(2) thin films: Clusters or not?

摘要

Laser ablated Cr-doped TiO_(2) thin films grown on LaAlO_(3) substrates are single phased anatase and room temperature ferromagnetic. The magnetic moment of Cr-doped TiO_(2) films is rather large, and it is consistent with the theoretical predictions. Magnetic force microscopy measurements certainly suggested that the strong ferromagnetism at high temperature in Cr-doped TiO_(2) films is intrinsic, and it must originate from the diluted magnetic matrix but not from any form of clusters.