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Ferromagnetism in chromium-doped reduced-rutile titanium dioxide thin films
Wang, Zhenjun Tang, Jinke Zhang, Hongguo Golub, Vladimir Spinu, Leonard Tung, Le Duc
Wang, Zhenjun
Tang, Jinke
Zhang, Hongguo
Golub, Vladimir
Spinu, Leonard
Tung, Le Duc
Abstract
Description
Cr-doped reduced-rutile TiO2 thin films were grown on R-plane sapphire substrates by pulsed-laser deposition. X-ray diffraction and transmission electron microscopy results indicate that the films are single phase and reduced-rutile type. Superconducting quantum interference device magnetometer measurements show the films are ferromagnetic up to 400 K. A large magnetic moment of 2.9 μB per Cr atom is found for 6% Cr-doped reduced films at room temperature, and the saturation magnetization of the films decreases with increasing Cr doping. The temperature dependence of the resistivity shows semiconducting behavior.
Date
2004-06-01
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University of Wyoming. Libraries
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Keywords
Physical Sciences and Mathematics