Zobrazeno 1 - 10
of 25
pro vyhledávání: '"Lisa A. Tietz"'
Autor:
S.C. Cheng, C.M. Smith, Sabyasachi Sen, Susan L Schiefelbein, M. Pierson-Stull, Lisa Ann Tietz Moore
Publikováno v:
Journal of Non-Crystalline Solids. 352:3140-3146
Electron energy loss spectroscopy (EELS) was used to study the absorption edge of various types of fused silica. The relationships between transmission (%T), fictive temperature (Tf), band gap energy (E0), and slope of the Urbach tail (K) were invest
Publikováno v:
Ultramicroscopy. 60:241-246
A top-bottom effect in double diffraction has been observed in selected-area diffraction (SAD) patterns recorded from epitactic overgrowths. In SAD patterns recorded from epitactic α-Fe2O3 islands grown on an (0001) Al2O3 substrate, the double-diffr
Autor:
C. Barry Carter, Lisa A. Tietz
Publikováno v:
Philosophical Magazine A. 67:729-744
The interface structure of α-Fe2O3 islands grown directly on an electron transparent Al2O3 (1102) substrate by low-pressure chemical vapour deposition has been characterized by weak-beam imaging in the transmission electron microscope. The islands e
Autor:
C. Barry Carter, Lisa A. Tietz
Publikováno v:
Philosophical Magazine A. 67:699-727
Misfit dislocation networks at the Fe2O3-Al2O3 (0001) interface have been characterized using weak-beam imaging in the transmission electron microscope. The heterojunctions were prepared by chemical vapour deposition of α-Fe2O3 (haematite) directly
Autor:
Lisa A. Tietz, C. Barry Carter
Publikováno v:
Journal of the American Ceramic Society. 75:1097-1102
Continuous α-Fe2O3 films grown on bulk (0001)Al2O2 substrates by low-pressure chemical vapor deposition have been studied by transmission electron microscopy and the observations compared to those obtained from discontinuous films at an earlier stag
Publikováno v:
Philosophical Magazine A. 65:439-460
The early stages of growth of haematite (α-Fe2O3) on four orientations of sapphire (α-Al2O3), namely (0001), {102}, {110} and {100}, has been studied by transmission electron microscopy. Specimens were made by a new technique in which the haematite
Autor:
C. Barry Carter, Lisa A. Tietz
Publikováno v:
Physica C: Superconductivity. 182:241-251
Grain boundaries described by rotations about the c [001] axis are discussed in terms of a near-CSL model for orthorhombic materials. Grain boundaries in an oriented YBa 2 Cu 3 O 7- x (YBCO) thin film grown on an (001) ZrO 2 substrate by electron-bea
Autor:
Sabyasachi Sen, S.C. Cheng, Charlene M. Smith, Susan L Schiefelbein, M. Pierson-Stull, Lisa Ann Tietz Moore
Publikováno v:
Microscopy and Microanalysis. 11
Publikováno v:
MRS Proceedings. 238
The ability to tailor thin film interface structure is illustrated by the growth of thin ferric oxide films using different deposition parameters. Low-pressure chemical vapor deposition (CVD) has been used to grow α-Fe2O3 on sapphire while pulsed-la
Publikováno v:
Proceedings, annual meeting, Electron Microscopy Society of America. 48:376-377
Defects in thin films are often introduced at the substrate-film interface during the early stages of growth. The interface structures of semiconductor heterojunctions have been extensively studied because of the electrical activity of defects in the