Zobrazeno 1 - 10
of 101
pro vyhledávání: '"V. H. Schmidt"'
Publikováno v:
Ferroelectrics. 470:52-59
Phase transitions, dielectric permittivity, and conductivity of (Bi1-xBax)(Fe1-xTix)O3 (x = 0.05 and 0.1) [BFO-(Ba,Ti)] multiferroic ceramics have been studied as functions of temperature and frequency. In situ synchrotron x-ray diffraction revealed
Autor:
K. T. Wu, T. H. Wang, Yeong-Der Yao, Y. Ding, V. H. Schmidt, R. R. Chien, Chi-Shun Tu, W.-C Yang
Publikováno v:
IEEE Transactions on Magnetics. 47:3343-3346
Dielectric permittivity and loss of BiFeO3 (BFO) and 5 mol% lanthanum-substituted BFO [(Bi0.95La0.05)FeO3 or BFO-5% La] ceramics have been carried out as functions of temperature and frequency. A frequency-dependent and broad dielectric shoulder and
Autor:
V. H. Schmidt
Publikováno v:
ECS Transactions. 6:11-24
This model for voltage V vs. current density i characteristics applies both to the Solid Oxide Fuel Cell (SOFC) and Solid Oxide Electrolysis Cell (SOEC) modes of operation. It is based on reaction rates calculated from a molecular-scale model for the
Publikováno v:
Ferroelectrics. 300:117-120
Neutron diffraction was used to study the paraelectric (PE) to antiferroelectric (AFE) phase transition in a deuteron glass crystal Rb 0.5 (ND 4 ) 0.5 D 2 AsO 4 (DRADA-50). Coexistence of AFE and PE phases was proven in a temperature range 7-12 K wid
Publikováno v:
Ferroelectrics. 272:225-230
Influence of NH4 M Cs substitution has been studied in the mixed Cs 1 m x (NH 4 ) x H 2 PO 4 crystals system by means of dielectric measurements. The x-T phase diagram was determined: for ammonium concentrations up to 0.1 the system has a monoclinic
Publikováno v:
Repositório Científico de Acesso Aberto de Portugal
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
Films of semicrystalline poly(vinylidene fluoride) (PVDF) in the β-phase were studied by Fourier transform infrared (FTIR) spectroscopy and differential scanning calorimetry (DSC). The main goal of this study was to improve the understanding of the
Autor:
S. G. Lushnikov, V. H. Schmidt, L. A. Shuvalov, G. F. Tuthill, A. I. Fedoseev, S. N. Gvasaliya
Publikováno v:
Physical Review Letters. 86:2838-2841
We describe damping of hypersonic and ultrasonic longitudinal acoustic (LA) phonons in crystals of Cs 5H (3)(SO (4))(4);xH 2O (PCHS) between 100 and 360 K. The damping of LA phonons exhibits strong dispersion caused by relaxation processes in the reg
Publikováno v:
Solid State Communications. 116:41-45
Russian Foundation for Basic Research Grant (99-02-18316); NSF Grant (DMR-9805272); ISSEP Grant
Publikováno v:
Ferroelectrics Letters Section. 27:49-57
Dielectric permittivity along the [111] direction has been measured as a function of temperature for a relaxor ferroelectric single crystal (PbMg1/3Nb2/3O3)0.67(PbTiO3)0.33 (PMN-33%PT). A sharp ferroelectric phase transition was observed near 425 K a
Autor:
Liu Cui-xia, V H Schmidt, Bao Zhong-xing, Zhu Daoben, N J Pinto, N S Dalal, C.S. Tu, Li Yu-liang
Publikováno v:
Chinese Physics. 9:676-679
Electrical properties and equations of state in solid C-60 at room temperature and high pressure have been studied in a diamond anvil cell using capacitance and resistance measurements and a piston-cylinder type device using P-V measurements, respect