Results 51 to 60 of about 114 (110)

Excitation and emission of Pr3+:PLZT ceramics

Ceramics International, 2016
Abstract Excitation and emission spectra of Pr 3+ :PLZT ceramics have been studied. Several emission bands were measured under blue laser excitation, which correspond to 3 P 0 → 3 H 4 , 1 D 2 → 3 H 4 , 3 P 0 → 3 H 4 and 3 P 0 → 3 F 2 transitions of trivalent Pr 3+ . Their integrated emission intensities were determined.
Malgorzata Plonska, Wojciech Pisarski
exaly   +2 more sources

Luminescence of PLZT ceramics

Ferroelectrics, 1989
Abstract Spectra, kinetics and thermal behavior of photoluminescence in PLZT X/65/35 ceramics have been studied with respect to different concentrations of different sorts of defects (inherent: lead and oxygen vacancies and dopant-induced by Mn, Fe, Co, Ni). The features observed are shown to be related to disordering of the material.
A. Sprogis, V. Dimza
openaire   +1 more source

Birefringent light scattering in PLZT ceramics

IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 1991
A model for visible light scattering in thin, ferroelectric ceramic plates is presented. This and other previously published models are compared with experimental results. An expression for scattered light intensity over exit angle is developed on the basis of multiple refraction from randomly oriented grain and domain walls in a birefringent medium ...
M D, Ivey, V W, Bolie
openaire   +2 more sources

Studies on microstructure and microproperty of PLZT ceramics

Ferroelectrics, 1988
Abstract The microstructure of PLZT tranparent ferroelectric ceramics were studied by using the HREM techniques and electron diffraction study. The following experimental results were obtained: (1) The structure of micro-domains presented in the cubic α phase is exactly the same structure of its ferroelectric β phase after poling.
Z.W. Yin, X.T. Chen, X.Y. Song, J.W. Feng   +3 more
openaire   +1 more source

Dielectric properties of PLZT ceramics

Conference on Electrical Insulation & Dielectric Phenomena - Annual Report 1976, 1976
The dielectric behavior of ferroelectric ceramics are of special importance in determining their electro-optic properties. An electro-optic ceramic is a transparent or partially transparent polycrystalline ferroelectric material. It is composed of an aggregate of ferroelectric single crystal grains, with a typical grain size varying from 0.5 to 40 μm ...
Aida S. Khalafalla, Gregory J. Olson
openaire   +1 more source

Electrocaloric effect in PLZT ceramics

Ferroelectrics, 1986
The electrocaloric effect in rhombohedral PLZT ceramics is studied as function of applied field and temperature. The results obtained are consistent with the general idea of the existence of an intermediate state of mixed polar and nonpolar regions in the interval of the diffuse phase transition.
E. Birks, L. Shebanov, A. Sternberg
openaire   +1 more source

TEM study of PLZT ceramics

Ferroelectrics Letters Section, 1985
Abstract The microscopic structures of PLZT(7.9/70/30 and x/65/35, x = 7 or 8) ceramics were studied by means of transmission electron microscopy. The presence of micro-regions in PLZTs was first verfied.
P. C. Wang, Z. L. Chen, X. M. He, L. W. Yin, S. L. Wen, X. Y. Song   +5 more
openaire   +1 more source

Polymorphism and penferroelectricity in PLZT ceramics

Proceedings of the IEEE, 1973
The interaction of structure with optical and electrical properties in lanthanum-doped lead zirconate-titanate (PLZT) ceramics is complex. An interpretation is presented which shows the critical dependence of structure and, hence, properties on the state of polarization, the temperature, and the La content.
A.H. Meitzler, H.M. O'Bryan
openaire   +1 more source

Elastic properties of PLZT ceramics

Ferroelectrics, 1989
Abstract The elastic properties of PLZT ceramics have been measured in a wide temperature range from 78 up to 800°K. The common features of the temperature behavior of elastic moduli have been found for all ferroelectrics with diffuse phase transition.
N. K. Yushin, L. F. Bazarova, G. Gulyamov   +2 more
openaire   +1 more source

Television applications of PLZT ceramics

Ferroelectrics, 1976
Abstract This paper describes applications of PLZT ferroelectric ceramic devices to television systems, including usage as variable neutral density filters, selective spectral filters, and as light gates in a system for stereoscopic television viewing.
William E. Perry, Bert M. Soltoff
openaire   +1 more source