Spatially modulated antiferromagnetic order in CoO/NiO superlattices

Autor:	Charles F. Majkrzak, Ami E. Berkowitz, Matthew J. Carey, R. W. Erwin, Julie A. Borchers
Rok vydání:	1993
Předmět:	Condensed Matter::Materials Science Paramagnetism Materials science Magnetic moment Condensed matter physics Nickel oxide Transition temperature Superlattice Neutron diffraction General Physics and Astronomy Antiferromagnetism Condensed Matter::Strongly Correlated Electrons Cobalt oxide
Zdroj:	Physical Review Letters. 70:1878-1881
ISSN:	0031-9007
DOI:	10.1103/physrevlett.70.1878
Popis:	Neutron diffraction measurements confirm the presence of long-range antiferromagnetic order in superlattices of cobalt oxide and nickel oxide. A single transition temperature between the values for bulk CoO and NiO is evident for two samples with 36 A periods as previously reported, but the separate Ni and Co order parameters in a 72 A period superlattice approximate bulk behavior. In the latter sample the magnetic order remains coherent across ostensibly paramagnetic CoO interlayers above 400 K. Mean field analysis accounts for the layer thickness dependence of the ordering temperature
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ffc7b686a2119366d638b4fb4cbe25a9 https://doi.org/10.1103/physrevlett.70.1878 Zobrazit plný text záznamu