Abstract
Multilayers composed of oxides including Fe304, Co~Fe3_~O4, CoO, NiO and MgO have been
grown epitaxially by MBE on MgO(100) single crystal substrates. These structures can be
grown with a high crystallinity in the form of fiat layers having sharp interfaces. RHEED
studies which commonly yielded sharp streaks accompanied by Kikuchi lines show that, for
instance, growth of CoO on Fe304 changes the RHEED pattern from that consistent with a
spinel structure to that of a rocksalt structure within about one and a half unit cell of CoO.
STM studies on a 400 A Fe304 layer displaying atomic resolution enabled us to identify
the origin of the reconstruction that one commonly observes in the RHEED and LEED
patterns for magnetite. Regarding important fundamental magnetic parameters, relevant
thickness dependencies were mapped out using localized magneto-optical Kerr effect exper
iments performed on several samples that routinely included one or multiple wedge shaped
layers. These studies revealed the existence of a region in the Fe3 04 layer near the interfaces
which exhibits no net magnetic moment, strain driven perpendicular orientated magnetiza
tion for the CoO/Fe304(100) and CoO/Co~Fea~~O4(100) bilayer systems, and information
on the thickness dependence of the magnetic interlayer coupling across an MgO spacer layer.
Original language | English |
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Title of host publication | Epitaxial oxide thin films II : Symposium held November 26 - 30, 1995, Boston, Massachusetts |
Editors | J.S. Speck, D.K. Fork |
Place of Publication | Pittsburgh |
Publisher | Materials Research Society |
Pages | 485-499 |
ISBN (Print) | 1-558-99304-5 |
Publication status | Published - 1996 |
Event | 1995 MRS Fall Meeting - Boston, United States Duration: 27 Nov 1995 → 1 Dec 1995 https://www.mrs.org/fall1995 |
Publication series
Name | Materials Research Society Symposium Proceedings |
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Volume | 401 |
ISSN (Print) | 0272-9172 |
Conference
Conference | 1995 MRS Fall Meeting |
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Country/Territory | United States |
City | Boston |
Period | 27/11/95 → 1/12/95 |
Internet address |