Preparation of nm-ordered barium titanate fine particles using the 2-step thermal decomposition of barium titanyl oxalate and their dielectric properties

2003 ◽  
Author(s):  
S. Wada ◽  
T. Hoshina ◽  
H. Kakemoto ◽  
T. Tsurumi
Keyword(s):  
Thermal Decomposition ◽  
Dielectric Properties ◽  
Barium Titanate ◽  
Fine Particles ◽  
Barium Titanyl Oxalate ◽  
Titanyl Oxalate

Preparation of nm-Sized BaTiO3 Crystallites by The 2-Step Thermal Decomposition of Barium Titanyl Oxalate and their Dielectric Properties

2003 ◽  
Vol 248 ◽  
pp. 19-22 ◽  
Author(s):  
Satoshi Wada ◽  
Takuya Hoshina ◽  
Hiroaki Yasuno ◽  
Song Min Nam ◽  
Hirofumi Kakemoto ◽  
...  
Keyword(s):  
Thermal Decomposition ◽  
Dielectric Properties ◽  
Barium Titanyl Oxalate ◽  
Titanyl Oxalate

Formation mechanism of barium titanate by thermal decomposition of barium titanyl oxalate

2011 ◽  
Vol 37 (2) ◽  
pp. 669-672 ◽  
Author(s):  
Won-Sik Jung ◽  
Bong-Ki Min ◽  
Jiho Park ◽  
Dang-Hyok Yoon
Keyword(s):  
Thermal Decomposition ◽  
Barium Titanate ◽  
Formation Mechanism ◽  
Barium Titanyl Oxalate ◽  
Titanyl Oxalate

Preparation of barium titanate ceramics from amorphous fine particles of the Ba–Ti–O system and its dielectric properties

1995 ◽  
Vol 10 (2) ◽  
pp. 306-311 ◽  
Author(s):  
S. Wada ◽  
T. Suzuki ◽  
T. Noma
Keyword(s):  
Dielectric Properties ◽  
Barium Titanate ◽  
Curie Temperature ◽  
Decomposition Method ◽  
Fine Particles ◽  
Nitrate Solution ◽  
Pressing Method ◽  
Calcination Temperatures ◽  
Grain Sizes ◽  
Titanate Ceramics

Using titanium nitrate solution stabilized by chelation, amorphous fine particles of the Ba-Ti-O system were prepared by the mist decomposition method in air. After calcination of these particles, barium titanate ceramics were prepared using the hot uniaxial pressing method, and various properties were investigated. As a result, the grain sizes could be controlled over the range from 58 nm to 187 nm by the sintering temperatures and/or the calcination temperatures, keeping the density almost constant. Moreover, the dielectric properties of the samples showed that the relative permittivity decreased with decreasing grain size, and Curie temperature also shifted to lower temperatures in the same way. In this study, we first found that Curie temperature existed in the barium titanate ceramics with grain sizes from 58 to 147 nm.

THz region dielectric properties of barium titanate fine particles using infrared reflection method

2006 ◽  
Vol 26 (10-11) ◽  
pp. 1807-1810 ◽  
Author(s):  
Satoshi Wada ◽  
Hiroaki Yasuno ◽  
Takuya Hoshina ◽  
Hirofumi Kakemoto ◽  
Yoshikazu Kameshima ◽  
...  
Keyword(s):  
Dielectric Properties ◽  
Barium Titanate ◽  
Fine Particles ◽  
Reflection Method ◽  
Infrared Reflection

scholarly journals Thermal Decomposition Process of Barium Titanyl Oxalate Tetrahydrate.

1999 ◽  
Vol 107 (1241) ◽  
pp. 27-30 ◽  
Author(s):  
Jianfei XU ◽  
Sakae TSUTAI ◽  
Shigeo HAYASHI ◽  
Mikio SUGAI ◽  
Zenbe-e NAKAGAWA
Keyword(s):  
Thermal Decomposition ◽  
Decomposition Process ◽  
Thermal Decomposition Process ◽  
Barium Titanyl Oxalate ◽  
Titanyl Oxalate
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