Effect of TiO 2 and SnO 2 on the microwave dielectric properties of Ba(Mg 1/3Ta 2/3)O 3 ceramics

Chang Hak Choi, Sahn Nahm, Yong Won Song, Jae Dong Byun, Young Sik Kim, Hwack Joo Lee, Hyun Min Park

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Abstract

The effects of TiO 2 and SnO 2 additives on the sinterability and the microwave dielectric properties of Ba(Mg 1/3Ta 2/3)O 3 (BMT) ceramics were investigated. X-ray diffraction and electron probe microanalysis results implied that Ti +4 and Sn +4 ions substituted for the Ta +5 ions in BMT. The splitting of the (422) and (226) peaks was significantly reduced when the contents of the additives exceeded 1.0 mol%, indicating a decrease of 1 : 2 ordering. The grain size, the relative density, the dielectric constant and the Q-value of BMT increased with the addition of a small amount of TiO 2 (or SnO 2). However, a large addition of TiO 2 or SnO 2 reduced the relative density, the dielectric constant, and the Q-value of BMT. The temperature coefficient of the resonant frequency (TC f) of BMT increased with the addition of TiO 2 and decreased with the addition of SnO 2. The following values were obtained with a 0.2 mol% TiO 2 addition: ε r=24.9, Q × f 0≃100,000 (f o = 8 GHz), and TC f=8.7 ppm/°C.

Original languageEnglish
JournalJournal of the Korean Physical Society
Volume35
Issue numberSUPPL. 2
Publication statusPublished - 1999 Dec 1

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dielectric properties
ceramics
microwaves
resonant frequencies
permittivity
electron probes
coefficients
microanalysis
ions
grain size
temperature
probes
diffraction
x rays

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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Effect of TiO 2 and SnO 2 on the microwave dielectric properties of Ba(Mg 1/3Ta 2/3)O 3 ceramics. / Choi, Chang Hak; Nahm, Sahn; Song, Yong Won; Byun, Jae Dong; Kim, Young Sik; Lee, Hwack Joo; Park, Hyun Min.

In: Journal of the Korean Physical Society, Vol. 35, No. SUPPL. 2, 01.12.1999.

Research output: Contribution to journalArticle

Choi, Chang Hak ; Nahm, Sahn ; Song, Yong Won ; Byun, Jae Dong ; Kim, Young Sik ; Lee, Hwack Joo ; Park, Hyun Min. / Effect of TiO 2 and SnO 2 on the microwave dielectric properties of Ba(Mg 1/3Ta 2/3)O 3 ceramics. In: Journal of the Korean Physical Society. 1999 ; Vol. 35, No. SUPPL. 2.
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abstract = "The effects of TiO 2 and SnO 2 additives on the sinterability and the microwave dielectric properties of Ba(Mg 1/3Ta 2/3)O 3 (BMT) ceramics were investigated. X-ray diffraction and electron probe microanalysis results implied that Ti +4 and Sn +4 ions substituted for the Ta +5 ions in BMT. The splitting of the (422) and (226) peaks was significantly reduced when the contents of the additives exceeded 1.0 mol{\%}, indicating a decrease of 1 : 2 ordering. The grain size, the relative density, the dielectric constant and the Q-value of BMT increased with the addition of a small amount of TiO 2 (or SnO 2). However, a large addition of TiO 2 or SnO 2 reduced the relative density, the dielectric constant, and the Q-value of BMT. The temperature coefficient of the resonant frequency (TC f) of BMT increased with the addition of TiO 2 and decreased with the addition of SnO 2. The following values were obtained with a 0.2 mol{\%} TiO 2 addition: ε r=24.9, Q × f 0≃100,000 (f o = 8 GHz), and TC f=8.7 ppm/°C.",
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AU - Byun, Jae Dong

AU - Kim, Young Sik

AU - Lee, Hwack Joo

AU - Park, Hyun Min

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N2 - The effects of TiO 2 and SnO 2 additives on the sinterability and the microwave dielectric properties of Ba(Mg 1/3Ta 2/3)O 3 (BMT) ceramics were investigated. X-ray diffraction and electron probe microanalysis results implied that Ti +4 and Sn +4 ions substituted for the Ta +5 ions in BMT. The splitting of the (422) and (226) peaks was significantly reduced when the contents of the additives exceeded 1.0 mol%, indicating a decrease of 1 : 2 ordering. The grain size, the relative density, the dielectric constant and the Q-value of BMT increased with the addition of a small amount of TiO 2 (or SnO 2). However, a large addition of TiO 2 or SnO 2 reduced the relative density, the dielectric constant, and the Q-value of BMT. The temperature coefficient of the resonant frequency (TC f) of BMT increased with the addition of TiO 2 and decreased with the addition of SnO 2. The following values were obtained with a 0.2 mol% TiO 2 addition: ε r=24.9, Q × f 0≃100,000 (f o = 8 GHz), and TC f=8.7 ppm/°C.

AB - The effects of TiO 2 and SnO 2 additives on the sinterability and the microwave dielectric properties of Ba(Mg 1/3Ta 2/3)O 3 (BMT) ceramics were investigated. X-ray diffraction and electron probe microanalysis results implied that Ti +4 and Sn +4 ions substituted for the Ta +5 ions in BMT. The splitting of the (422) and (226) peaks was significantly reduced when the contents of the additives exceeded 1.0 mol%, indicating a decrease of 1 : 2 ordering. The grain size, the relative density, the dielectric constant and the Q-value of BMT increased with the addition of a small amount of TiO 2 (or SnO 2). However, a large addition of TiO 2 or SnO 2 reduced the relative density, the dielectric constant, and the Q-value of BMT. The temperature coefficient of the resonant frequency (TC f) of BMT increased with the addition of TiO 2 and decreased with the addition of SnO 2. The following values were obtained with a 0.2 mol% TiO 2 addition: ε r=24.9, Q × f 0≃100,000 (f o = 8 GHz), and TC f=8.7 ppm/°C.

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