Thickness dependent crystallographic transition in Fe/Ni multilayers
2010 (English)In: Journal of Physics, Conference Series, ISSN 1742-6588, E-ISSN 1742-6596, Vol. 217, 012112- p.Article in journal (Refereed) Published
The crystallog. transition between bcc- and fcc-structures has been studied in Fe/Ni multilayers with Moessbauer spectroscopy and X-ray diffraction. Layered structures have been confirmed and the structures depends both on individual layer thickness and the ratio of the constituents. Two sets of samples are made: the Fe layer thickness kept const. to 12 monolayer (ML) and 24ML, while the Ni layer thicknesses varied from 3 to 12ML. When the Ni layer is thin, the Fe/Ni multilayers have the bcc phase. When the thickness of Ni layer reaches 6ML and larger, a gradual transition to the fcc phase occurs. Moessbauer spectroscopy studies confirm the existence of a magnetic Fe bcc phase with in-plane magnetization in all samples, two magnetic fcc phases with fields of 28 T and 10 T and small amts. of nonmagnetic fcc phases in the thicker films. The obsd. behavior can be attributed to the existence of two types of interfaces which are not necessary overlapping each other: An elemental interface between Fe and Ni and a structural interface between fcc and bcc phases. [on SciFinder(R)]
Place, publisher, year, edition, pages
2010. Vol. 217, 012112- p.
iron nickel multilayer crystallog transition layer thickness
IdentifiersURN: urn:nbn:se:kth:diva-78458DOI: 10.1088/1742-6596/217/1/012112ISI: 000287181700112OAI: oai:DiVA.org:kth-78458DiVA: diva2:495736
CAPLUS AN 2010:648124(Journal; Online Computer File). QC 201202102012-02-092012-02-082012-02-10Bibliographically approved