UV-INDUCED CHANGES OF THE POLARIZATION PROFILE OF Pb(Zr,Ti)O3 THIN FILMS

2005 ◽  
Vol 73 (1) ◽  
pp. 75-82
Author(s):  
G. SUCHANECK ◽  
WEN-MEI LIN ◽  
G. GERLACH ◽  
F. AHAMED ◽  
G. SUBRAMANYAM
Keyword(s):  
Thin Films ◽  
Polarization Profile ◽  
Induced Changes

INDUCED CHANGES OF THERMOTROPIC PROPERTIES OF PHASE TRANSITIONS BETWEEN SMECTIC A MESOPHASE AND ISOTROPIC LIQUID: EFFECT OF SURFACES

2006 ◽  
Vol 20 (14) ◽  
pp. 821-833 ◽  
Author(s):  
ARIF NESRULLAJEV ◽  
ŞENER OKTIK
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Phase Transition ◽  
Phase Transitions ◽  
Isotropic Liquid ◽  
Smectic A ◽  
Phase Transition Temperatures ◽  
Smectic A Phase ◽  
Induced Changes ◽  
Thermotropic Properties

In this work, the effect of thin films on the thermotropic and thermo-optical properties and peculiarities of the phase transitions between the smectic A and isotropic liquid have been investigated. Peculiarities of the heterophase regions of the straight smectic A-isotropic liquid and reverse isotropic liquid-smectic A phase transitions have been studied. Change of morphologic properties of the heterophase regions, shift of the phase transition temperatures and the change of temperature widths of these heterophase regions under thin film influence have been observed.

Influence of Laser Heat Treatment on Fracture Strength of Ceramic Thin Film

2012 ◽  
Vol 566 ◽  
pp. 145-149
Author(s):  
Hirotaka Tanabe ◽  
Keiji Ogawa ◽  
Yui Izumi ◽  
Tohru Takamatsu ◽  
Heisaburo Nakagawa ◽  
...  
Keyword(s):  
Thin Films ◽  
Heat Treatment ◽  
Fracture Strength ◽  
Strength Loss ◽  
Substrate Material ◽  
Laser Quenching ◽  
Ceramic Thin Films ◽  
Film Hardness ◽  
Induced Changes ◽  
Substrate Hardness

In our previous study, it has been shown that improvement of the adhesive strength and substrate hardness of ceramic coated steels without compromising the film hardness can be achieved by applying laser quenching. In the present research, in order to demonstrate further development of this method, the fracture strength of laser-irradiated ceramic thin films (CrAlN, TiAlN and CrN) was investigated by sphere indentation testing. To prevent heat-induced changes in the substrate hardness, a cemented carbide WC-Co rather than steel was used as substrate material. While the fracture strength of each film decreased significantly through furnace heat treatment, it remained almost unchanged in case of the laser irradiated films. Laser quenching has been shown to effectively reduce the fracture strength loss of the ceramic thin films in coated steels.

Hydrostatic-pressure-induced changes of magnetic anisotropy in (Ga, Mn)As thin films

2017 ◽  
Vol 29 (11) ◽  
pp. 115805 ◽  
Author(s):  
Marta Gryglas-Borysiewicz ◽  
Piotr Juszyński ◽  
Adam Kwiatkowski ◽  
Jacek Przybytek ◽  
Janusz Sadowski ◽  
...  
Keyword(s):  
Thin Films ◽  
Hydrostatic Pressure ◽  
Magnetic Anisotropy ◽  
Induced Changes

Electrooptic Properties of Pzt thin Films for Image Storage Applications

1991 ◽  
Vol 243 ◽  
Author(s):  
D. Dimos ◽  
R.W. Schwartz
Keyword(s):  
Thin Films ◽  
Sol Gel ◽  
Ferroelectric Films ◽  
Image Storage ◽  
Pzt Thin Films ◽  
Hysteresis Behavior ◽  
Pzt Films ◽  
Induced Changes

AbstractThe photocurrent responses, photo-induced changes in hysteresis behavior, and electrooptic (birefringence) effects of sol-gel derived PZT films have been characterized as part of an effort to evaluate ferroelectric films for image storage and processing applications.

Structural and Vibrational Properties of Ferroelectric Pb1-xSrxTiO3 Thin Films and Powders

2002 ◽  
Vol 748 ◽  
Author(s):  
M. Jain ◽  
A. Savvinov ◽  
P. S. Dobal ◽  
S. B. Majumder ◽  
R. S. Katiyar ◽  
...  
Keyword(s):  
Thin Films ◽  
Soft Mode ◽  
Ferroelectric Properties ◽  
Sol Gel ◽  
Vibrational Properties ◽  
X Ray Diffraction ◽  
Phase Transition Temperatures ◽  
Induced Changes ◽  
Pst System

ABSTRACTIn this work we present the structural, and vibrational properties of ferroelectric Pb1-xSrxTiO3 (PST). Thin films of PST were prepared by using sol-gel technique for various compositions with x values ranging from 0.0–1.0. Respective compositions were also prepared in ceramic and powder forms using sol-gel and solid-state reaction methods. X-ray diffraction was used for the structural characterization of these materials. Raman spectroscopy was utilized to study the phases and lattice vibrational modes, especially the soft mode in PST compositions. The temperature dependence of the soft mode frequency for different PST compositions revealed that the phase transition temperatures increased with increasing Pb contents in PST system. Ferroelectric properties of the films were correlated with the substitution-induced changes in the material.

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