scholarly journals Optical properties of Na0.5Bi0.5TiO3 crystals

2019 ◽  
Vol 27 (1) ◽  
pp. 37-40
Author(s):  
T. V. Kruzina ◽  
S. A. Popov ◽  
Yu. N. Potapovich ◽  
A. S. Rutskyi
Keyword(s):  
Domain Structure ◽  
Temperature Interval ◽  
Room Temperature ◽  
Single Domain ◽  
Optical Methods ◽  
Axial Pressure ◽  
Single Domain State ◽  
Linear Behavior ◽  
Domain State ◽  
Pressure Interval

We report some peculiarities of behavior of domain structure and birefringence ∆n of Na0.5Bi0.5TiO3 crystals. Polarization-optical methods are used to study the domain structure and the birefringence ∆n in temperature interval 25°C÷520°C and axial pressure interval 2.5÷60 bar. Single domain state is achieved by application of axial pressure along [100] and [110] directions at temperature near 500°C. Application of axial pressure ~50 bar along [100] direction leads to switching of the samples into anisotropic single domain state. While application of axial pressure ~0.5 bar along [110] direction results in exposition of visually isotropic state and the state is preserved during a cooling process in temperature interval ~500°C÷240°C. In both cases the anisotropic single domain state is observed at room temperature. It is shown that f axial pressure (2.5÷25 bar) application along [110] direction at room temperature leads to a significant increase of the birefringence. It is supposed that both the peculiarities of Δn behavior and the linear behavior of Δn = f(p) are associated with presence of the nanoregions with various orientations of optical indicatrices and their involvement into the orientation process under the action of axial pressure.

Introduction of Fine Engineered Domain Configuration into Potassium Niobate Single Crystals

2007 ◽  
Vol 350 ◽  
pp. 89-92
Author(s):  
Keisuke Yokoh ◽  
Tomomitsu Muraishi ◽  
Song Min Nam ◽  
Hirofumi Kakemoto ◽  
Takaaki Tsurumi ◽  
...  
Keyword(s):  
Electric Field ◽  
Single Crystals ◽  
Room Temperature ◽  
Single Domain ◽  
Potassium Niobate ◽  
Field Exposure ◽  
Domain State ◽  
Domain Configuration ◽  
Dc Electric Field ◽  
Direction Of Polarization

To induce fine engineered domain configurations into potassium niobate (KNbO3) single crystals, two kinds of methods were performed, i.e., (1) high DC electric field exposure along the opposite direction of polarization of KNbO3 single-domain crystals at room temperature, and (2) introduction of randomly oriented fine domain configuration by heat treatment at 700 °C and then high DC electric field exposure along [001]c direction of KNbO3 multidomain crystals at room temperature. When the method (1) was performed, finally, the poled KNbO3 crystals became to single-domain state again through the formation of multidomain state. On the other hand, the KNbO3 multidomain crystals were obtained by using the method (2), and an enhancement of piezoelectric-related properties was observed.

scholarly journals Easy Realization of the Single-Domain State in NaNO2

1964 ◽  
Vol 3 (9) ◽  
pp. 564B-564B
Author(s):  
Shozo Sawada ◽  
Yohko Asao
Keyword(s):  
Single Domain ◽  
Single Domain State ◽  
Domain State

Formation of single domain state and spontaneous backswitching in SBN single crystal

2016 ◽  
Vol 496 (1) ◽  
pp. 149-156 ◽  
Author(s):  
E. A. Kolchina ◽  
M. M. Neradovskiy ◽  
V. A. Shikhova ◽  
D.V. Pelegov ◽  
V. Ya. Shur ◽  
...  
Keyword(s):  
Single Crystal ◽  
Single Domain ◽  
Single Domain State ◽  
Domain State

scholarly journals Spin waves in circular soft magnetic dots at the crossover between vortex and single domain state

2009 ◽  
Vol 79 (17) ◽  
Author(s):  
Farkhad G. Aliev ◽  
Juan F. Sierra ◽  
Ahmad A. Awad ◽  
Gleb N. Kakazei ◽  
Dong-Soo Han ◽  
...  
Keyword(s):  
Spin Waves ◽  
Single Domain ◽  
Soft Magnetic ◽  
Single Domain State ◽  
Domain State ◽  
Magnetic Dots

Magnetic Properties of Various Thick Co-Fe Circular Dot Arrays

2007 ◽  
Vol 124-126 ◽  
pp. 879-882
Author(s):  
Yasushi Endo ◽  
Yusuke Niimi ◽  
Ryoichi Nakatani ◽  
Yoshio Kawamura ◽  
Masahiko Yamamoto
Keyword(s):  
Magnetic Properties ◽  
Magnetic State ◽  
Vortex State ◽  
Single Domain ◽  
Optimum Thickness ◽  
Single Domain State ◽  
Closure Domain ◽  
Domain State ◽  
State Changes ◽  
Magnetic States

We have studied the magnetic properties of Co-Fe circular dot arrays with various thicknesses and diameters in order to determine the optimum thickness and diameter of these dot arrays with a single-domain state for the transmission of spin information. For the thickness of 10 nm, the magnetic state changes from a multi-domain state to a closure-domain state and further to a single-domain state with decreasing diameter. On the other hand, for the thickness of 30 nm and 50 nm, all magnetic states are in a vortex state, regardless of the diameter. From these results, it is found that the optimum thickness and diameter of Co-Fe circular dots with a single-domain state are, respectively, 10 nm and less than 100 nm.

scholarly journals Unique single-domain state in a polycrystalline ferroelectric ceramic

2014 ◽  
Vol 89 (10) ◽  
Author(s):  
Hanzheng Guo ◽  
Chao Zhou ◽  
Xiaobing Ren ◽  
Xiaoli Tan
Keyword(s):  
Ferroelectric Ceramic ◽  
Single Domain ◽  
Single Domain State ◽  
Domain State

scholarly journals Deterministic multi-step rotation of magnetic single-domain state in Nickel nanodisks using multiferroic magnetoelastic coupling

2017 ◽  
Vol 439 ◽  
pp. 196-202 ◽  
Author(s):  
Hyunmin Sohn ◽  
Cheng-yen Liang ◽  
Mark E. Nowakowski ◽  
Yongha Hwang ◽  
Seungoh Han ◽  
...  
Keyword(s):  
Single Domain ◽  
Magnetoelastic Coupling ◽  
Single Domain State ◽  
Domain State
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