| 41. |
Preferred alignment of twin boundaries in YBa2Cu3Oxthin films and YBa2Cu3Ox/PrBa2Cu3Oxsuperlattices on SrTiO3 |
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Applied Physics Letters,
Volume 58,
Issue 19,
1991,
Page 2174-2176
J. D. Budai,
M. F. Chisholm,
R. Feenstra,
D. H. Lowndes,
D. P. Norton,
L. A. Boatner,
D. K. Christen,
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摘要:
The structure of YBa2Cu3Oxthin films and YBa2Cu3Ox/PrBa2Cu3Oxsuperlattice films grown on (00L) SrTiO3substrates has been studied using x‐ray diffraction and transmission electron microscopy. The films consist of four symmetry‐equivalent domains related by mutually perpendicular (hh0) and (hh¯0) twin boundaries. One twin orientation is often highly favored over the other. We have correlated this in‐plane symmetry breaking with small miscuts of the substrate surface towards the [HH0] direction and propose that interfacial steps act as nucleation sites for twins. Thus, by controlling the surface normal, a technique is described for producing films containing aligned twin boundaries.
ISSN:0003-6951
DOI:10.1063/1.104997
出版商:AIP
年代:1991
数据来源: AIP
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| 42. |
Magneto‐optical properties of Pd‐Ni multilayers |
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Applied Physics Letters,
Volume 58,
Issue 19,
1991,
Page 2177-2179
N. K. Flevaris,
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摘要:
The magneto‐optical polar Kerr effect properties of compositionally modulated Pdm‐Ninmultilayers have been studied, at room temperature, for modulation wavelengths containing just a few monolayers. A perpendicular anisotropy component was observed to develop for very thin Ni layers (n=2 or 1 atomic planes). The rotation values were found to depend strongly on bothmandnsuggesting a modulation‐induced property modification. These results were supported by magnetic studies. Also, they are discussed on the basis of extensive structural and other investigations.
ISSN:0003-6951
DOI:10.1063/1.104967
出版商:AIP
年代:1991
数据来源: AIP
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| 43. |
Atom probe analysis of Fe73.5Si13.5B9Nb3Cu1nanocrystalline soft magnetic material |
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Applied Physics Letters,
Volume 58,
Issue 19,
1991,
Page 2180-2182
K. Hono,
A. Inoue,
T. Sakurai,
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摘要:
The microstructure of Fe73.5Si13.5B9Nb3Cu1soft magnetic material with a nanocrystalline structure has been investigated by atom probe field ion microscopy. In the as‐quenched amorphous sample, all the alloying elements were found to distribute homogeneously as an amorphous solid solution. In the annealed sample with the optimum soft magnetic properties, we found that two phases were present. One was Fe‐Si solid solution and the other was the B‐ and Nb‐enriched region with less Si content. Although some uncertainty remains regarding Cu, the present result is consistent with an early speculation based on the lattice parameter measurement.
ISSN:0003-6951
DOI:10.1063/1.104968
出版商:AIP
年代:1991
数据来源: AIP
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