Interfacial magnetism in CaRuO3/CaMnO3 superlattices grown on (001) SrTiO3

Autor:	Virat Mehta, F. J. Wong, Yuri Suzuki, X. Zhai, C. He
Rok vydání:	2011
Předmět:	Magnetization Materials science Condensed matter physics Ferromagnetism Magnetism Superlattice Alloy engineering General Physics and Astronomy Curie temperature engineering.material Epitaxy Pulsed laser deposition
Zdroj:	Journal of Applied Physics. 109:07D729
ISSN:	1089-7550 0021-8979
Popis:	We have studied epitaxially grown superlattices of CaRuO3/CaMnO3 as well as an alloy film of CaMn0.5Ru0.5O3 on (001) SrTiO3 substrates. In contrast to previous experiments, we have studied CRO/CMO superlattices with a constant CRO thickness and variable CMO thickness. All superlattices exhibit Curie temperatures (TC) of 110 K. The saturated magnetization per interfacial Mn cation has been found to be 1.1 μB/Mn ion. The TC’s of the superlattices are much lower than the TC of the alloy film while the saturated magnetization values are larger than that of the alloy film. These observations suggest that interdiffusion alone cannot account for ferromagnetism in the superlattices and that double exchange induced FM must play a role at the interfaces.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::a0d7e27d930886373f75f8e118623172 https://doi.org/10.1063/1.3561448 Zobrazit plný text záznamu