TY - JOUR
T1 - Barium neodymium titanium borate glass-based high k dielectrics
AU - Lee, Seung Min
AU - Jo, Yeon Hwa
AU - Kim, Hyo Eun
AU - Mohanty, Bhaskar C.
AU - Cho, Yong Soo
PY - 2012/4
Y1 - 2012/4
N2 - A nonconventional high k glass based on BaO·Nd 2O 3·-TiO 2·B 2O 3, which is combined with typical fillers of Al 2O 3 and BaTiO 3, has been investigated for the purpose of generating potential k (dielectric constant) ∼20 and k ∼ 40 dielectric materials as a result of densification at 850°C. Crystallization, densification, and dielectric properties depended strongly on the type and content of the fillers. Glass itself was crystallized mainly with BaTi(BO 3) 2. The Al 2O 3 filler did not seem to be directly involved in the crystallization process as only non Al-containing crystalline phases, such as NdBO 3, Nd 2Ti 4O 11, and BaNd 2Ti 5O 14, were observed. On the contrary, the BaTiO 3 filler resulted in the crystallization of two phases, BaTi(BO 3) 2 and BaNd 2Ti 5O 14. As an example of a promising dielectric candidate, a composite sample consisting of the glass and 30 wt% Al 2O 3 exhibited k ∼ 22 and tan δ ∼ 0.009 with nearly full densification at 850°C.
AB - A nonconventional high k glass based on BaO·Nd 2O 3·-TiO 2·B 2O 3, which is combined with typical fillers of Al 2O 3 and BaTiO 3, has been investigated for the purpose of generating potential k (dielectric constant) ∼20 and k ∼ 40 dielectric materials as a result of densification at 850°C. Crystallization, densification, and dielectric properties depended strongly on the type and content of the fillers. Glass itself was crystallized mainly with BaTi(BO 3) 2. The Al 2O 3 filler did not seem to be directly involved in the crystallization process as only non Al-containing crystalline phases, such as NdBO 3, Nd 2Ti 4O 11, and BaNd 2Ti 5O 14, were observed. On the contrary, the BaTiO 3 filler resulted in the crystallization of two phases, BaTi(BO 3) 2 and BaNd 2Ti 5O 14. As an example of a promising dielectric candidate, a composite sample consisting of the glass and 30 wt% Al 2O 3 exhibited k ∼ 22 and tan δ ∼ 0.009 with nearly full densification at 850°C.
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U2 - 10.1111/j.1551-2916.2011.04966.x
DO - 10.1111/j.1551-2916.2011.04966.x
M3 - Article
AN - SCOPUS:84859639375
SN - 0002-7820
VL - 95
SP - 1356
EP - 1359
JO - Journal of the American Ceramic Society
JF - Journal of the American Ceramic Society
IS - 4
ER -