scholarly journals Dielectric properties of BaTiO3–Bi(Mg1/2Ti1/2)O3 films with preferential crystal orientation

2016 ◽  
Vol 124 (6) ◽  
pp. 648-652 ◽  
Author(s):  
Shota MOKI ◽  
Junichi KIMURA ◽  
Hiroshi FUNAKUBO ◽  
Hiroshi UCHIDA
Keyword(s):  
Dielectric Properties ◽  
Crystal Orientation ◽  
Preferential Crystal Orientation

Crystal orientation dependence of the dielectric properties for epitaxial BaZr0.15Ti0.85O3 thin films

2007 ◽  
Vol 90 (2) ◽  
pp. 022903 ◽  
Author(s):  
J. Miao ◽  
J. Yuan ◽  
H. Wu ◽  
S. B. Yang ◽  
B. Xu ◽  
...  
Keyword(s):  
Thin Films ◽  
Dielectric Properties ◽  
Crystal Orientation ◽  
Orientation Dependence

Sol–gel preparation of transparent zinc oxide films with highly preferential crystal orientation

Vacuum ◽  
2004 ◽  
Vol 77 (1) ◽  
pp. 57-62 ◽  
Author(s):  
Hongxia Li ◽  
Jiyang Wang ◽  
Hong Liu ◽  
Changhong Yang ◽  
Hongyan Xu ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Crystal Orientation ◽  
Sol Gel ◽  
Oxide Films ◽  
Zinc Oxide Films ◽  
Gel Preparation ◽  
Preferential Crystal Orientation

scholarly journals Causes and nature of ice-sheet radio-echo internal reflections estimated from the dielectric properties of ice

1994 ◽  
Vol 20 ◽  
pp. 80-86 ◽  
Author(s):  
Shuji Fujita ◽  
Shinji Mae
Keyword(s):  
Dielectric Properties ◽  
Crystal Orientation ◽  
Electromagnetic Waves ◽  
Ice Sheets ◽  
Ice Sheet ◽  
Volcanic Eruptions ◽  
Microwave Frequency ◽  
Reflection Coefficients ◽  
Single Plane ◽  
Deep Layers

The causes and nature of ice-sheet radio-echo internal reflections at deep layers in polar ice sheets are discussed, based on the dielectric properties of ice that have been measured at microwave frequency and radio frequency. The reflection coefficients of electromagnetic waves in ice sheets due to two causes the change in permittivity induced by changes in crystal-orientation fabrics with depth, and changes in conductivity induced by changes in acidity with depth - were derived respectively as a function of the frequency used in radar sounding and the temperature of ice, and both were compared quantitatively. It is shown that at single-plane boundaries the reflection coefficients due to the former cause are independent of frequency and temperature and that they are large enough to produce dominant internal reflections. In contrast, reflection coefficients due to the latter cause strongly depend on frequency and temperature. Since they are inversely proportional to the frequency, the latter cause can be dominant only when frequencies below about 60 MHz are used. Examination of previous observational data has suggested that not only changes in acidity but also changes in crystal-orientation fabrics exist at depths corresponding to the dates of earlier volcanic eruptions.

Effect of Crystal Orientation on Dielectric Properties of Lead Zirconium Titanate Thin Films Prepared by Reactive RF-Sputtering

2001 ◽  
Vol 40 (Part 1, No. 2A) ◽  
pp. 713-717 ◽  
Author(s):  
Sriram Kalpat ◽  
X. Du ◽  
Issac R. Abothu ◽  
Akira Akiba ◽  
Hiroshi Goto ◽  
...  
Keyword(s):  
Thin Films ◽  
Dielectric Properties ◽  
Crystal Orientation ◽  
Rf Sputtering ◽  
Zirconium Titanate ◽  
Lead Zirconium Titanate

Crystalline Polyimide Thin Film Deposition by Ionized Cluster Bean

1989 ◽  
Vol 157 ◽  
Author(s):  
S.J. Cho ◽  
H.S. Choe ◽  
H.G. Jang ◽  
S.S. Iim ◽  
C.N. Whang
Keyword(s):  
Crystal Orientation ◽  
Thin Film Deposition ◽  
Polyimide Film ◽  
Film Deposition ◽  
Ion Acceleration ◽  
Cluster Beam ◽  
Cluster Beam Deposition ◽  
Acceleration Voltage ◽  
Preferential Crystal Orientation ◽  
Beam Deposition

ABSTRACTPolyimide thin films are deposited by the ionized cluster beam deposition( ICBD ) technique. Polymerization and crystallization of polyimide were investigated using TEN, IR, and the electronic structure of the polyimide film was investigated using XPS. Films deposited at optimum ion acceleration voltage showed strong preferential crystal orientation. Crystalline polyimide film was obtained at ion acceleration voltage of 700 V.

Dielectric Properties of Highly (001)-Plane Oriented SrBi4Ti4O15 Thin Films

2010 ◽  
Vol 445 ◽  
pp. 131-134
Author(s):  
Yuki Mizutani ◽  
Hiroshi Uchida ◽  
Hiroshi Funakubo ◽  
Seiichiro Koda
Keyword(s):  
Thin Films ◽  
Crystal Orientation ◽  
Substrate Surface ◽  
Dielectric Constants ◽  
Frequency Range ◽  
Si Substrate ◽  
Capacitance Change ◽  
Solution Deposition ◽  
Current Densities ◽  
Preferential Crystal Orientation

Thin films of a bismuth layer-structured dielectric oxides (BLSD), SrBi4Ti4O15, with preferential crystal orientation were prepared by means of chemical solution deposition (CSD) technique on (111)Pt/(100)Si substrate with bottom nucleation layers of conductive perovskite oxides, LaNiO3 and SrRuO3. CSD technique was utilized for the film preparation of SrBi4Ti4O15. These films possessed highly crystal orientation of (00l) BLSD planes parallel to the substrate surface. The leakage current densities of the SrBi4Ti4O15 films on (100)SrRuO3//(100)LaNiO3/(111)Pt/Ti/(100)Si and on (100)LaNiO3/(111)Pt/Ti/(100)Si were approximately 10-6 and 10-7 A/cm2 respectively. The dielectric constants of these films in a frequency range of 102 - 106 Hz were from 310 to 350 and 250 to 260 respectively. The value of capacitance change of these films in the range from 20 to 300 oC was about +8 and +5% respectively.

scholarly journals Causes and nature of ice-sheet radio-echo internal reflections estimated from the dielectric properties of ice

1994 ◽  
Vol 20 ◽  
pp. 80-86 ◽  
Author(s):  
Shuji Fujita ◽  
Shinji Mae
Keyword(s):  
Dielectric Properties ◽  
Crystal Orientation ◽  
Electromagnetic Waves ◽  
Ice Sheets ◽  
Ice Sheet ◽  
Volcanic Eruptions ◽  
Microwave Frequency ◽  
Reflection Coefficients ◽  
Single Plane ◽  
Deep Layers

The causes and nature of ice-sheet radio-echo internal reflections at deep layers in polar ice sheets are discussed, based on the dielectric properties of ice that have been measured at microwave frequency and radio frequency. The reflection coefficients of electromagnetic waves in ice sheets due to two causes the change in permittivity induced by changes in crystal-orientation fabrics with depth, and changes in conductivity induced by changes in acidity with depth - were derived respectively as a function of the frequency used in radar sounding and the temperature of ice, and both were compared quantitatively. It is shown that at single-plane boundaries the reflection coefficients due to the former cause are independent of frequency and temperature and that they are large enough to produce dominant internal reflections. In contrast, reflection coefficients due to the latter cause strongly depend on frequency and temperature. Since they are inversely proportional to the frequency, the latter cause can be dominant only when frequencies below about 60 MHz are used. Examination of previous observational data has suggested that not only changes in acidity but also changes in crystal-orientation fabrics exist at depths corresponding to the dates of earlier volcanic eruptions.

Crystal orientation dependence of the in-plane dielectric properties for Ba(Sn0.15Ti0.85)O3 thin films

2008 ◽  
Vol 254 (16) ◽  
pp. 5120-5123 ◽  
Author(s):  
Sannian Song ◽  
Lina Gao ◽  
Jiwei Zhai ◽  
Xi Yao ◽  
Zhiqun Cheng
Keyword(s):  
Thin Films ◽  
Dielectric Properties ◽  
Crystal Orientation ◽  
Orientation Dependence

The Radio-Frequency Birefringence of Polar Ice

1978 ◽  
Vol 21 (85) ◽  
pp. 301-313 ◽  
Author(s):  
N. D. Hargreaves
Keyword(s):  
Dielectric Constant ◽  
Dielectric Properties ◽  
Radio Frequency ◽  
Single Crystal ◽  
Crystal Orientation ◽  
Heterogeneous Media ◽  
Ice Crystals ◽  
Laboratory Measurements ◽  
Polar Ice

AbstractRadio-echo observations have shown that polar ice in situ is birefringent. The most likely explanation of the birefringence is an anisotropy in the radio-frequency dielectric constant of the ice single crystal, combined with the ordering of the orientations of the ice crystals in polar ice. It is possible to calculate the birefringence of ice which has a distribution of crystal orientations using a technique similar to that used to derive the dielectric properties of heterogeneous media. The experimentally observed birefringence may then be shown to be consistent with the crystal orientation fabric at the site of the observations if the anisotropy of the dielectric constant is slightly less than 1%, that is, slightly less than the accuracy of the laboratory measurements which have failed to detect any anisotropy. Further experimental observations might be used to obtain information on not only the level of anisotropy of the single crystal but also on the crystal orientation fabric of the ice.

Sign in / Sign up

Export Citation Format

Share Document