A textured barium niobate with enhanced temperature stability of dielectric constant for high-frequency applications

Dong-Wan Kim, Byung Kook Kim, Hae June Je, Jae Gwan Park, Jeong Ryeol Kim, Kug Sun Hong

Research output: Contribution to journalArticle

Abstract

Ba 5Nb 4O 15 has shown excellent microwave dielectric properties and is under consideration as a low-temperature cofired ceramic material for advanced radio frequency (RF) applications. By combining tape casting and liquid phase upon sintering, sintered Ba 5Nb 4O 15 thick films stacked to form laminates were produced with aligned elongated grains. This texture engineering, correlated with crystallographic orientation, provides remarkably high temperature stability of dielectric constant up to microwave frequency. Crystallographic texture arises in Ba 5Nb 4O 15 induced by the primary consolidation process, hot pressing, and pulsed laser deposition. The dielectric anisotropy could be efficiently obtained in the textured samples, thereby enabling significant feasibility of microwave circuit designs.

Original languageEnglish
Pages (from-to)2354-2360
Number of pages7
JournalJournal of Materials Research
Volume21
Issue number9
DOIs
Publication statusPublished - 2006 Dec 27
Externally publishedYes

Fingerprint

niobates
Barium
barium
Permittivity
textures
Textures
permittivity
liquid phase sintering
Liquid phase sintering
Microwave circuits
microwave circuits
hot pressing
consolidation
Microwave frequencies
Hot pressing
Pulsed laser deposition
Ceramic materials
microwave frequencies
Thick films
Consolidation

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

A textured barium niobate with enhanced temperature stability of dielectric constant for high-frequency applications. / Kim, Dong-Wan; Kim, Byung Kook; Je, Hae June; Park, Jae Gwan; Kim, Jeong Ryeol; Hong, Kug Sun.

In: Journal of Materials Research, Vol. 21, No. 9, 27.12.2006, p. 2354-2360.

Research output: Contribution to journalArticle

Kim, Dong-Wan ; Kim, Byung Kook ; Je, Hae June ; Park, Jae Gwan ; Kim, Jeong Ryeol ; Hong, Kug Sun. / A textured barium niobate with enhanced temperature stability of dielectric constant for high-frequency applications. In: Journal of Materials Research. 2006 ; Vol. 21, No. 9. pp. 2354-2360.
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