Lei Shi et al 1997 J. Phys.: Condens. Matter 9 7855 doi:10.1088/0953-8984/9/37/016
grains on (001)
Lei Shi
, Jie Gao
, Guien Zhou
and Yuheng Zhang
,![]()
Various orientations of
grains in polycrystalline films prepared on (001)
substrates by the d.c. sputtering method were studied by x-ray diffraction experiments. The relation between the a and b axes of the
thin film and the in-plane lattice vectors of the
substrate has been directly obtained by an x-ray reflection
scan. The orientational relations agree well with the predication of a simplified theory of a near-coincidence site lattice between
and
. The
grains were found to have a high probability of forming low-angle or low-
boundaries among themselves. These grain boundaries are of low energy, free from extraneous phases, and exhibit a high connectivity of Mn - O - Mn nets. Therefore, the boundaries can still support the GMR effect.
68.55.-a Thin film structure and morphology
61.05.cm X-ray reflectometry (surfaces, interfaces, films)
81.15.Cd Deposition by sputtering
73.50.Jt Galvanomagnetic and other magnetotransport effects (including thermomagnetic effects)
68.55.Ln Defects and impurities: doping, implantation, distribution, concentration, etc.
Issue 37 (15 September 1997)
Received 18 March 1997, in final form 28 May 1997
grains on (001)
Lei Shi et al 1997 J. Phys.: Condens. Matter 9 7855
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