Journal
MATERIALS CHEMISTRY AND PHYSICS
Volume 160, Issue -, Pages 80-86Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.matchemphys.2015.04.009
Keywords
Electronic materials; Semiconductors; Ab initio calculations; Magnetic properties
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Funding
- National Natural Science Foundation of China [51074112, 11247224]
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The magnetic properties of Li, Mg, Al and K doped SrTiO3 are systematically investigated using first-principle calculations with hybrid functionals. The spontaneous magnetization for K doping at A site (Sr site) and X doping (X = Li, Mg and Al) at B site (Ti site) was observed. Interestingly, doping X at B site only polarizes the oxygen atoms, while doping K at A site polarizes both. oxygen and titanium atoms in opposite directions. The induced magnetic moments increase monotonously with the number of holes introduced by doping. The estimated Curie temperatures (T-C) over bar are much higher than the room temperature which indicates the room temperature ferromagnetism can be realized by hole doping in SrTiO3. (C) 2015 Elsevier B.V. All rights reserved.
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