Zobrazeno 1 - 10
of 29
pro vyhledávání: '"E. T. Keve"'
Autor:
K. L. Bye, E. T. Keve
Publikováno v:
Journal of Applied Physics. 46:810-818
The poling of certain compositions of PLZT ceramic is shown to cause a phase transition (α→β). The polar β phase can be rhombohedral, tetragonal, or orthorhombic depending upon composition, while phase α is always cubic. Characteristic subgrain
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0f32c242ed57ce6398b09314fdbeea07
https://doi.org/10.1063/1.321651
https://doi.org/10.1063/1.321651
Structural studies of triglycine sulphate Part II: After x-irradiation/field treatment (structure B)
Publikováno v:
Ferroelectrics. 14:789-799
The crystal structure of triglycine sulphate after X-irradiation/field treatment is reported. The crystals are monoclinic with unit cell dimensions a = 9.421 (1), b = 12.656(1), c = 5.732(1) A, β = 110.35 (1)° space group P21, Z = 2. Least-squares
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b81d28606736e84bd2212868b2d87e4c
https://doi.org/10.1080/00150197608237798
https://doi.org/10.1080/00150197608237798
Publikováno v:
Ferroelectrics. 14:775-787
The crystal structure of ferroelectric triglycine sulphate has been determined from single-crystal X-ray diffractometer data. A single-domain crystal was used and the X-ray dose was minimized in order to reduce the effects of radiation damage. The cr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3b75b3b79361e50bfea24c8d91a2e113
https://doi.org/10.1080/00150197608237797
https://doi.org/10.1080/00150197608237797
Autor:
E. T. Keve
Publikováno v:
Ferroelectrics. 10:169-174
The properties which are of prime interest for the application of ferroelectric materials are often critically dependent on crystal structure. Understanding of these properties can usually be advanced if the crystal structure of the material is inves
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7fc3019de803681cdce13aecd6e55876
https://doi.org/10.1080/00150197608241972
https://doi.org/10.1080/00150197608241972
Publikováno v:
The Journal of Chemical Physics. 51:4928-4936
BaMnF4, pyroelectric at room temperature and paramagnetic above 30°K, crystallizes in the orthorhombic system with space group A21am and lattice constants a = 5.9845 ± 0.0003, b = 15.098 ± 0.002, and c = 4.2216 ± 0.0003 A at 298°K. The integrate
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::146e23fa49416195fd7fff900bf6acd0
https://doi.org/10.1063/1.1671885
https://doi.org/10.1063/1.1671885
Publikováno v:
Ferroelectrics. 3:39-48
The recently reported permanent poling effects in triglycine sulphate (TGS) containing some α-alanine additive is further investigated by pyroeiectric and dielectric measurements. The probable role of an L-alanine molecule in the lattice of TGS is e
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b02102628216cdbe7f06240272b20b97
https://doi.org/10.1080/00150197108237682
https://doi.org/10.1080/00150197108237682
Normal probability plot analysis of error in measured and derived quantities and standard deviations
Autor:
S. C. Abrahams, E. T. Keve
Publikováno v:
Acta Crystallographica Section A. 27:157-165
Normal probability plot analysis is applied to independent sets of crystallographic structure factor measurements (F) and the derived coordinates (p). Differences between corresponding pairs of structure factors (ΔF) in the two sets are examined in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6c210fae5a0cb672e270ce6bd5d9fd5c
https://doi.org/10.1107/s0567739471000305
https://doi.org/10.1107/s0567739471000305
Publikováno v:
Ferroelectrics. 4:253-256
Triglycine sulphate crystals have been grown with 10-20 times higher L-alanine substitution than those reported pre-viously. The present crystals contain up to 2% L-alanine, show internal bias fields in excess of 80 kV cm-1 and have severely depresse
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::651ff8283cabae454380fc06735e712a
https://doi.org/10.1080/00150197308235767
https://doi.org/10.1080/00150197308235767
Publikováno v:
Le Journal de Physique Colloques. 33:C2-229
The permanent poling effects of L-alanine substitution on the pyroelectric properties of T. G. S. are summarized. The observations are explained in terms of a structural model in which ferroelectric switching is impeded by the lack of the required pr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::09ee895148ef6a5dc4f8e41ce53428fd
https://doi.org/10.1051/jphyscol:1972279
https://doi.org/10.1051/jphyscol:1972279
Publikováno v:
The Journal of Chemical Physics. 53:3279-3287
Barium cobalt fluoride, BaCoF4, ferroelectric and paramagnetic at room temperature, crystallizes in the orthorhombic system with lattice constants a = 5.8519 ± 0.0003, b = 14.628 ± 0.002, and c = 4.2102 ± 0.0003 A at 298°K and space group A21am.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::533d95fa94efbfa2a3f10835787119b7
https://doi.org/10.1063/1.1674478
https://doi.org/10.1063/1.1674478