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

Research output: Contribution to journalArticle

66 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 (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.

Original languageEnglish
Pages (from-to)1868-1874
Number of pages7
JournalMaterials Research Bulletin
Volume41
Issue number10
DOIs
Publication statusPublished - 2006 Oct 12

Fingerprint

Dielectric properties
dielectric properties
sintering
Sintering
Microwaves
ceramics
microwaves
Powders
Permittivity
Temperature
temperature
Liquids
liquid phases
permittivity
boron oxide

Keywords

  • A. Ceramics
  • A. Electronic materials
  • D. Dielectric properties

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry

Cite this

Effect of BaCu(B2O5) on the sintering temperature and microwave dielectric properties of BaO-Ln2O3-TiO2 (Ln = Sm, Nd) ceramics. / Lim, Jong Bong; Cho, Kyung Hoon; Nahm, Sahn; Paik, Jong Hoo; Kim, Jong Hee.

In: Materials Research Bulletin, Vol. 41, No. 10, 12.10.2006, p. 1868-1874.

Research output: Contribution to journalArticle

Lim, Jong Bong ; Cho, Kyung Hoon ; Nahm, Sahn ; Paik, Jong Hoo ; Kim, Jong Hee. / Effect of BaCu(B2O5) on the sintering temperature and microwave dielectric properties of BaO-Ln2O3-TiO2 (Ln = Sm, Nd) ceramics. In: Materials Research Bulletin. 2006 ; Vol. 41, No. 10. pp. 1868-1874.
@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}",
year = "2006",
month = "10",
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

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

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

U2 - 10.1016/j.materresbull.2006.03.013

DO - 10.1016/j.materresbull.2006.03.013

M3 - Article

VL - 41

SP - 1868

EP - 1874

JO - Materials Research Bulletin

JF - Materials Research Bulletin

SN - 0025-5408

IS - 10

ER -