Hydrogen-induced ferromagnetism in ZnCoO
- 6 February 2006
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 88 (6), 062504
- https://doi.org/10.1063/1.2171789
Abstract
We have investigated experimentally the effects of n -type impurities such as Al and H on the magnetic properties of ZnCoO. The carrier density changes slightly upon the introduction of hydrogen but increases significantly in the case of Al. A measurement of magnetic circular dichroism indicates that, of the two impurities, only H induces ferromagnetism in ZnCoO. Our experimental data suggest that, unlike Al, H plays an important role in the enhancement of ferromagnetic spin-spin interactions that goes much beyond a carrier-mediated effect.Keywords
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