Effect of BaCu(B2O5) on the sintering temperature and microwave dielectric properties of BaO-Ln2O3-TiO2 (Ln = Sm, Nd) ceramics

Jong Bong Lim; Kyung Hoon Cho; Sahn Nahm; Jong Hoo Paik; Jong Hee Kim

doi:10.1016/j.materresbull.2006.03.013

Effect of BaCu(B₂O₅) on the sintering temperature and microwave dielectric properties of BaO-Ln₂O₃-TiO₂ (Ln = Sm, Nd) ceramics

Jong Bong Lim, Kyung Hoon Cho, Sahn Nahm, Jong Hoo Paik, Jong Hee Kim

Department of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

68 Citations (Scopus)

Abstract

BaCu(B₂O₅) (BCB) ceramic powder was used to decrease the sintering temperatures of BaSm₂Ti₄O₁₂ (BST) and BaNd₂Ti₅O₁₄ (BNT) ceramics. The sintering temperature of the BST and BNT ceramics was reduced from approximately 1350 °C to 850 °C by the addition of BCB. The bulk density of the specimens increased and reached the saturated value with increasing BCB content. The variation of the dielectric constant (ε_r) was similar to that of the bulk density and, thus, the relative density plays an important role in determining the ε_r value of the specimens. The Q-value initially increased with the addition of BCB but decreased considerably when a large amount of BCB was added because of the presence of the liquid phase. Good microwave dielectric properties of Qxf = 4500 GHz, ε_r = 60 and τ_f = -30 ppm/°C were obtained for the 16.0 mol% BCB-added BST ceramics sintered at 875 °C for 2 h.

Original language	English
Pages (from-to)	1868-1874
Number of pages	7
Journal	Materials Research Bulletin
Volume	41
Issue number	10
DOIs	https://doi.org/10.1016/j.materresbull.2006.03.013
Publication status	Published - 2006 Oct 12

Keywords

A. Ceramics
A. Electronic materials
D. Dielectric properties

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

Access to Document

10.1016/j.materresbull.2006.03.013

Cite this

@article{f5e80409bef84a09a55bae20f3431b68,

title = "Effect of BaCu(B2O5) on the sintering temperature and microwave dielectric properties of BaO-Ln2O3-TiO2 (Ln = Sm, Nd) ceramics",

abstract = "BaCu(B2O5) (BCB) ceramic powder was used to decrease the sintering temperatures of BaSm2Ti4O12 (BST) and BaNd2Ti5O14 (BNT) ceramics. The sintering temperature of the BST and BNT ceramics was reduced from approximately 1350 °C to 850 °C by the addition of BCB. The bulk density of the specimens increased and reached the saturated value with increasing BCB content. The variation of the dielectric constant (εr) was similar to that of the bulk density and, thus, the relative density plays an important role in determining the εr value of the specimens. The Q-value initially increased with the addition of BCB but decreased considerably when a large amount of BCB was added because of the presence of the liquid phase. Good microwave dielectric properties of Qxf = 4500 GHz, εr = 60 and τf = -30 ppm/°C were obtained for the 16.0 mol% BCB-added BST ceramics sintered at 875 °C for 2 h.",

keywords = "A. Ceramics, A. Electronic materials, D. Dielectric properties",

author = "Lim, {Jong Bong} and Cho, {Kyung Hoon} and Sahn Nahm and Paik, {Jong Hoo} and Kim, {Jong Hee}",

note = "Funding Information: This work was supported by the Ministry of Science and Technology through the Nano-Technology project. One of authors was financially supported by the Ministry of Science and Technology through NRL project. ",

year = "2006",

month = oct,

day = "12",

doi = "10.1016/j.materresbull.2006.03.013",

language = "English",

volume = "41",

pages = "1868--1874",

journal = "Materials Research Bulletin",

issn = "0025-5408",

publisher = "Elsevier Limited",

number = "10",

}

TY - JOUR

T1 - Effect of BaCu(B2O5) on the sintering temperature and microwave dielectric properties of BaO-Ln2O3-TiO2 (Ln = Sm, Nd) ceramics

AU - Lim, Jong Bong

AU - Cho, Kyung Hoon

AU - Nahm, Sahn

AU - Paik, Jong Hoo

AU - Kim, Jong Hee

N1 - Funding Information: This work was supported by the Ministry of Science and Technology through the Nano-Technology project. One of authors was financially supported by the Ministry of Science and Technology through NRL project.

PY - 2006/10/12

Y1 - 2006/10/12

N2 - BaCu(B2O5) (BCB) ceramic powder was used to decrease the sintering temperatures of BaSm2Ti4O12 (BST) and BaNd2Ti5O14 (BNT) ceramics. The sintering temperature of the BST and BNT ceramics was reduced from approximately 1350 °C to 850 °C by the addition of BCB. The bulk density of the specimens increased and reached the saturated value with increasing BCB content. The variation of the dielectric constant (εr) was similar to that of the bulk density and, thus, the relative density plays an important role in determining the εr value of the specimens. The Q-value initially increased with the addition of BCB but decreased considerably when a large amount of BCB was added because of the presence of the liquid phase. Good microwave dielectric properties of Qxf = 4500 GHz, εr = 60 and τf = -30 ppm/°C were obtained for the 16.0 mol% BCB-added BST ceramics sintered at 875 °C for 2 h.

AB - BaCu(B2O5) (BCB) ceramic powder was used to decrease the sintering temperatures of BaSm2Ti4O12 (BST) and BaNd2Ti5O14 (BNT) ceramics. The sintering temperature of the BST and BNT ceramics was reduced from approximately 1350 °C to 850 °C by the addition of BCB. The bulk density of the specimens increased and reached the saturated value with increasing BCB content. The variation of the dielectric constant (εr) was similar to that of the bulk density and, thus, the relative density plays an important role in determining the εr value of the specimens. The Q-value initially increased with the addition of BCB but decreased considerably when a large amount of BCB was added because of the presence of the liquid phase. Good microwave dielectric properties of Qxf = 4500 GHz, εr = 60 and τf = -30 ppm/°C were obtained for the 16.0 mol% BCB-added BST ceramics sintered at 875 °C for 2 h.

KW - A. Ceramics

KW - A. Electronic materials

KW - D. Dielectric properties

UR - http://www.scopus.com/inward/record.url?scp=33747876256&partnerID=8YFLogxK

U2 - 10.1016/j.materresbull.2006.03.013

DO - 10.1016/j.materresbull.2006.03.013

M3 - Article

AN - SCOPUS:33747876256

SN - 0025-5408

VL - 41

SP - 1868

EP - 1874

JO - Materials Research Bulletin

JF - Materials Research Bulletin

IS - 10

ER -