Transported properties and low-temperature magnetic behaviors of Ti x Cr1− x O2 films
- 9 December 2020
- journal article
- research article
- Published by IOP Publishing in Journal of Physics D: Applied Physics
- Vol. 54 (13), 135004
- https://doi.org/10.1088/1361-6463/abd20f
Abstract
Electronic transport and magnetic properties of TixCr1-xO2 epitaxial films with low Ti concentrations have been studied. Compared with pure CrO2 film, Ti-doped films exhibit a significant increase of resistivity and the magnetoresistance at low temperature is more difficult to saturate even under an external field of 5 Tesla. The DC magnetization and AC susceptibility measurements suggest that a cluster glass freezing behavior occurs at low temperature in Ti-doped films. After analyzing the AC susceptibility using dynamic scaling theory, we have obtained the cluster-glass transition temperature TG = 97.8 K, the dynamic exponent zv = 12.37, and the characteristic time scale τ0 = 10-16, which lies in the range of the conventional cluster glass systems.Funding Information
- National Natural Science Foundation of China (11774270)
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