Zobrazeno 1 - 10
of 92
pro vyhledávání: '"George A. Samara"'
Publikováno v:
IEEE Transactions on Dielectrics and Electrical Insulation. 22:1455-1461
Understanding ferroelectricity in polymers presents a formidable challenge, as specific requirements in the crystalline ordering of the polymer chains must be met that run counter to the propensity of polymers to form largely disordered structures. C
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::363e3a53608ef368d0cd736616380378
https://doi.org/10.1109/tdei.2015.7116337
https://doi.org/10.1109/tdei.2015.7116337
Publikováno v:
Ferroelectrics. 377:120-136
Ceramic samples of Pb 0.99 La 0.01 (Zr 0.91 Ti0.09)O 3 were studied by dielectric and time-of-flight neutron diffraction measurements at 300 and 250 K versus pressure. Isothermal dielectric data (300/250 K) suggest structural transitions with onsets
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4170c3541b3f144032cb8a20e3ea9b09
https://doi.org/10.1080/00150190802523735
https://doi.org/10.1080/00150190802523735
Autor:
George A. Samara
Publikováno v:
Journal of Physics: Condensed Matter. 15:R367-R411
Random lattice disorder produced by chemical substitution in ABO3 perovskites can lead to the formation of dipolar impurities and defects that have a profound influence on the static and dynamic properties of these materials that are the prototypical
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d23246af104f7a3a8504eaa3eb17a2ff
https://doi.org/10.1088/0953-8984/15/9/202
https://doi.org/10.1088/0953-8984/15/9/202
Autor:
George A. Samara
Publikováno v:
Ferroelectrics. 274:183-202
Results on a variety of compositionally-disordered ABO 3 perovskites have revealed a pressure-induced crossover from a normal ferroelectric to a relaxor state and the continuous evolution of the dynamics of the relaxation process making the relaxor s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9722d0392cde55146851523af1bef55b
https://doi.org/10.1080/00150190213954
https://doi.org/10.1080/00150190213954
Autor:
Lynn A. Boatner, George A. Samara
Publikováno v:
Physical Review B. 61:3889-3896
It is shown that lattice disorder induced by Nb and Ca substitution has a strong influence on the dielectric and relaxational properties of KTaO{sub 3}. Both substituents are believed to occupy off-center positions at the Ta site, and the difference
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a9b9033da8971dd004bee703a84695e1
https://doi.org/10.1103/physrevb.61.3889
https://doi.org/10.1103/physrevb.61.3889
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 600:254-256
Neutron scattering experiments using triple axis spectrometers have been performed for the relaxor ferroelectric materials K1-xLixTaO3 (x = 0.05, 0.10) in order to study the behavior of the zone-center (ZC) transverse-optic (TO) phonon mode (ferroele
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::00f8bbfda237b817154cd6fd70c380c4
https://doi.org/10.1016/j.nima.2008.11.041
https://doi.org/10.1016/j.nima.2008.11.041
Publikováno v:
Physical Review B. 60:2704-2714
Highly crystalline, size-selected silicon (Si) nanocrystals in the size range 2-10 nm were grown in inverse micelles and their optical absorption and photoluminescence (PL) properties were studied. High resolution TEM and electron diffraction results
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6c9bde5bb0084eabada04e0fd57a45c7
https://doi.org/10.1103/physrevb.60.2704
https://doi.org/10.1103/physrevb.60.2704
Publikováno v:
Journal of Applied Physics. 81:7934-7944
Highly crystalline nanoclusters of hexagonal (2H polytype) MoS2 and several of its isomorphous Mo and W chalcogenides have been synthesized with excellent control over cluster size down to ∼2 nm. These clusters exhibit highly structured, bandlike o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::16471007a54fd93ed2800974435e81d1
https://doi.org/10.1063/1.365367
https://doi.org/10.1063/1.365367
Publikováno v:
Solid State Communications. 98:581-585
High quality, size-selected, nano-size clusters of FeS2 have been successfully grown inside inverse micellar cages and their optical absorption studied. Remarkable structure in the absorption spectrum is observed and large blue shifts in the absorpti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5b76a3b1fac667f5e2e3e9bad30ce4b4
https://doi.org/10.1016/0038-1098(95)00822-5
https://doi.org/10.1016/0038-1098(95)00822-5
Autor:
George A. Samara
Publikováno v:
Materials Technology. 11:72-75
The Department ofEnergy (DOE) Center ofExcellence for the Synthesis and Processing ofAdvanced Materials (CSP) represents a new kind ofresearch partnership among twelve DOE laboratories. It includes appropriate university grant research funded by DOE
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2f028eca49b42a416d7d67daba36e481
https://doi.org/10.1080/10667857.1996.11752667
https://doi.org/10.1080/10667857.1996.11752667