Microstructure and microwave dielectric properties of (1-x)NdGaO 3-xCaTiO 3 ceramics

Min Han Kim, Myung Jae Yoo, Sahn Nahm, Chang Hack Choi, Hwack Joo Lee, Hyun Min Park, Jae Cheon Kim, Myong Ho Kim

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

Microstructure and microwave dielectric properties of (1-x)NdGaO 3 -xCaTiO 3 ceramics have been investigated. For specimens with x ≤ 0.5, a Nd 3 Ga 5 O 12 phase was observed. A liquid phase was found in the specimens with x≥0.5, containing a high concentration of Ca and Ga ions. The dielectric constant ( ε r ) and the temperature coefficient of the resonant frequency ( τ f ) of the specimens increased with an increase of x. The Q×f value of the NdGaO 3 ceramics was about 85,000 GHz, and decreased inversely with x. Excellent microwave dielectric properties of Q×f=46,000 GHz, ε r =45 and τ f =-2 ppm/C were obtained for 0.35NdGaO 3 -0.65CaTiO 3 ceramics.

Original languageEnglish
Title of host publicationFerroelectrics
Pages303-308
Number of pages6
Volume272
DOIs
Publication statusPublished - 2002 Jan 1

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Dielectric properties
dielectric properties
Microwaves
ceramics
microwaves
microstructure
Microstructure
Natural frequencies
Permittivity
Ions
resonant frequencies
liquid phases
Liquids
permittivity
coefficients
Temperature
ions
temperature

Keywords

  • CaTiO
  • Microwave dielectric properties
  • NdGaO

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

Cite this

Kim, M. H., Yoo, M. J., Nahm, S., Choi, C. H., Lee, H. J., Park, H. M., ... Kim, M. H. (2002). Microstructure and microwave dielectric properties of (1-x)NdGaO 3-xCaTiO 3 ceramics In Ferroelectrics (Vol. 272, pp. 303-308) https://doi.org/10.1080/00150190211600

Microstructure and microwave dielectric properties of (1-x)NdGaO 3-xCaTiO 3 ceramics . / Kim, Min Han; Yoo, Myung Jae; Nahm, Sahn; Choi, Chang Hack; Lee, Hwack Joo; Park, Hyun Min; Kim, Jae Cheon; Kim, Myong Ho.

Ferroelectrics. Vol. 272 2002. p. 303-308.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Kim, MH, Yoo, MJ, Nahm, S, Choi, CH, Lee, HJ, Park, HM, Kim, JC & Kim, MH 2002, Microstructure and microwave dielectric properties of (1-x)NdGaO 3-xCaTiO 3 ceramics in Ferroelectrics. vol. 272, pp. 303-308. https://doi.org/10.1080/00150190211600
Kim MH, Yoo MJ, Nahm S, Choi CH, Lee HJ, Park HM et al. Microstructure and microwave dielectric properties of (1-x)NdGaO 3-xCaTiO 3 ceramics In Ferroelectrics. Vol. 272. 2002. p. 303-308 https://doi.org/10.1080/00150190211600
Kim, Min Han ; Yoo, Myung Jae ; Nahm, Sahn ; Choi, Chang Hack ; Lee, Hwack Joo ; Park, Hyun Min ; Kim, Jae Cheon ; Kim, Myong Ho. / Microstructure and microwave dielectric properties of (1-x)NdGaO 3-xCaTiO 3 ceramics Ferroelectrics. Vol. 272 2002. pp. 303-308
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