Phase transition, ferroelectric, and dielectric properties of layer-structured perovskite CaBi3Ti3O12−δ thin films

2001 ◽  
Vol 79 (3) ◽  
pp. 397-399 ◽  
Author(s):  
Kazumi Kato ◽  
Kazuyuki Suzuki ◽  
Kaori Nishizawa ◽  
Takeshi Miki
Keyword(s):  
Thin Films ◽  
Phase Transition ◽  
Dielectric Properties

Orientation-dependent phase transition and dielectric properties of Ba0.85Ca0.15Ti0.9Zr0.1O3 thin films

2012 ◽  
Vol 24 (2) ◽  
pp. 658-661 ◽  
Author(s):  
Shihua Yang ◽  
JinBao Xu ◽  
Bo Gao ◽  
Lei Wang ◽  
Jing Chen ◽  
...  
Keyword(s):  
Thin Films ◽  
Phase Transition ◽  
Dielectric Properties

Field Induced Dielectric Properties of 0.7Pb(Mg1/3Nb2/3)O3-0.3PbTiO3 Thin Films

2002 ◽  
Vol 748 ◽  
Author(s):  
Apurba Laha ◽  
S. Saha ◽  
S. B. Krupanidhi
Keyword(s):  
Thin Films ◽  
Phase Transition ◽  
Dielectric Constant ◽  
Dielectric Properties ◽  
Long Range ◽  
Bias Voltage ◽  
Frequency Dispersion ◽  
Dielectric Maximum ◽  
Diffused Phase Transition ◽  
Relaxor Property

ABSTRACTDC electric field induced dielectric properties of 0.7Pb(Mg1/3Nb2/3)O3-0.3PbTiO3 (PMN-PT) thin films were studied as a function of frequency at different temperatures. It was observed that the dielectric constant (ε) and dissipation factor (tanδ) were decreased in presence of bias field. The temperature of dielectric maxima was found to increase with increasing bias level. The low temperature (<Tm) frequency dispersion of dielectric permittivity was suppressed with the application of dc bias. After a certain bias voltage the relaxor property of films was disappeared i.e. the films exhibited normal ferroelectric behavior. Since the absence of long range interaction among the nanopolar clusters in PMN and its family is believed to be the origin of relaxor behavior, disappearance of relaxor nature in PMN-PT (70/30) films could be attributed to manifestation of long-range order at higher bias voltage. This was observed in the temperature dependence of dielectric constant i.e. the films neither exhibited any frequency dispersion in the temperature of dielectric maximum (Tm) nor showed any diffused phase transition. The relaxor property of PMN-PT thin films was studied in terms of diffused phase transition together with frequency dispersion of the temperature of dielectric maximum (Tm). Vogel-Fulcher relation was used to analyze the frequency dependence of temperature of dielectric maximum.

IN-PLANE DIELECTRIC PROPERTIES OF BST THIN FILMS GROWN ON MgO SUBSTRATES USING THE THIN PEROVSKITE LAYERS FOR MICROWAVE TUNABLE ELECTRONICS

2006 ◽  
Vol 86 (1) ◽  
pp. 159-169 ◽  
Author(s):  
SU-JAE LEE ◽  
HAN-CHEOL RYU ◽  
YOUNG-TAE KIM ◽  
MIN-HWAN KWAK ◽  
SEUNGEON MOON ◽  
...  
Keyword(s):  
Thin Films ◽  
Dielectric Properties ◽  
Bst Thin Films

scholarly journals Modulating the phase transition temperature of giant magnetocaloric thin films by ion irradiation

2017 ◽  
Vol 1 (6) ◽  
Author(s):  
S. Cervera ◽  
M. Trassinelli ◽  
M. Marangolo ◽  
C. Carrétéro ◽  
V. Garcia ◽  
...  
Keyword(s):  
Thin Films ◽  
Phase Transition ◽  
Transition Temperature ◽  
Phase Transition Temperature ◽  
Ion Irradiation

Strain Control of Phase Transition and Exchange Bias in Flexible Heusler Alloy Thin Films

2021 ◽  
Author(s):  
Yechao Ling ◽  
Yong Hu ◽  
Haobo Wang ◽  
Ben Niu ◽  
Jiawei Chen ◽  
...  
Keyword(s):  
Thin Films ◽  
Phase Transition ◽  
Exchange Bias ◽  
Heusler Alloy ◽  
Strain Control

scholarly journals Reconfigurable artificial microswimmers with internal feedback

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
L. Alvarez ◽  
M. A. Fernandez-Rodriguez ◽  
A. Alegria ◽  
S. Arrese-Igor ◽  
K. Zhao ◽  
...  
Keyword(s):  
Phase Transition ◽  
Dielectric Properties ◽  
Light Absorption ◽  
Local Heating ◽  
Volume Phase Transition ◽  
Active Materials ◽  
Colloidal Clusters ◽  
Robotic Devices ◽  
Dynamical Control ◽  
Synthetic Models

AbstractSelf-propelling microparticles are often proposed as synthetic models for biological microswimmers, yet they lack the internally regulated adaptation of their biological counterparts. Conversely, adaptation can be encoded in larger-scale soft-robotic devices but remains elusive to transfer to the colloidal scale. Here, we create responsive microswimmers, powered by electro-hydrodynamic flows, which can adapt their motility via internal reconfiguration. Using sequential capillary assembly, we fabricate deterministic colloidal clusters comprising soft thermo-responsive microgels and light-absorbing particles. Light absorption induces preferential local heating and triggers the volume phase transition of the microgels, leading to an adaptation of the clusters’ motility, which is orthogonal to their propulsion scheme. We rationalize this response via the coupling between self-propulsion and variations of particle shape and dielectric properties upon heating. Harnessing such coupling allows for strategies to achieve local dynamical control with simple illumination patterns, revealing exciting opportunities for developing tactic active materials.

Amorphous-to-crystalline phase transition of (InTe)x(GeTe) thin films

2010 ◽  
Vol 108 (2) ◽  
pp. 024506 ◽  
Author(s):  
Ki-Ho Song ◽  
Seung-Cheol Beak ◽  
Hyun-Yong Lee
Keyword(s):  
Thin Films ◽  
Phase Transition ◽  
Crystalline Phase ◽  
Crystalline Phase Transition
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