Low-temperature sintering-microwave dielectric property relations in Ba3(VO4)2 ceramic

Umemura, Ryosuke; Ogawa, Hirotaka; Yokoi, Atsushi; Ohsato, Hitoshi; Kan, Akinori

doi:10.1016/j.jallcom.2006.01.017

Cited by 116 publications

(54 citation statements)

References 11 publications

(10 reference statements)

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“…Detailed literature survey reveals that such metal orthovanadates have found many potential applications such as in fabrication of luminescent lamp coatings, television tubes, flat panel displays, microwave filters and antennas, etc. [18][19][20][21][22][23][24] Umemura et al 20 reported the excellent microwave dielectric properties of the divalent barium and strontium orthovanadate. As reported in Grzechnik et al 21 such orthovanadates show intense rare-earth activated luminescence.…”

Section: Introductionmentioning

confidence: 99%

Dielectric response and pyroelectric properties of lead-free ferroelectric Ba₃(VO₄)₂

Pati¹,

Choudhary

Das

et al. 2015

J. Adv. Dielect.

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The current paper presents results of dielectric response, pyroelectric behavior and conductivity study of lead-free ferroelectric barium orthovanadate (Ba 3 (VO 4 Þ 2 or Ba 3 V 2 O 8 Þ ceramic, for a wide range of temperature and frequency. An X-ray diffraction study suggests the formation of a single-phase compound in trigonal crystal system. The SEM micrograph of gold-coated pellet sample shows well-defined and homogeneous morphology. Detailed studies of dielectric parameters (" r and tan ) of the compound as a function of temperature and frequency reveal their independence over a wide range of temperature and frequency. The nature of Polarization versus electric field (P-E) hysteresis loop of Ba 3 V 2 O 8 at room temperature suggests its ferroelectric nature. The temperature dependence of pyroelectric coefficient and figure of merits of the sample support its dielectric response. The nature of variation of dc conductivity with temperature confirms the Arrhenius and negative temperature coefficient of resistance (NTCR) behavior of the material.

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Section: Introductionmentioning

confidence: 99%

Dielectric response and pyroelectric properties of lead-free ferroelectric Ba₃(VO₄)₂

Pati¹,

Choudhary

Das

et al. 2015

J. Adv. Dielect.

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“…Compared with TiO 2 and CaTiO 3 with positive s f values, Ba 3 (VO 4 ) 2 can be sintered at a relatively low temperature (1,100°C) and has a large positive s f value (?52 ppm/°C) and good microwave dielectric properties (e r * 14 and Q 9 f *42,000 GHz) [8]. As a result, it is often used as a s f -tailoring material to construct composite ceramics, such as Ba 3 (VO 4 ) 2 -Mg 2 SiO 4 and Ba 3 (VO 4 ) 2 -BaWO 4 , etc.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and microwave dielectric properties of low-temperature sinterable (1 − x)Ba3(VO4)2–xCaWO4 composite ceramics

Zuo

2012

J Mater Sci: Mater Electron

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Low-temperature-sintered Ba 3 (VO 4 ) 2 -CaWO 4 composite ceramics were prepared by cofiring mixtures of pure-phase Ba 3 (VO 4 ) 2 and CaWO 4 . The thermo-mechanical analysis revealed that the CaWO 4 in the composite ceramic can significantly promote the densification process and lower the sintering temperature to *900°C. The X-ray diffraction results indicated that Ba 3 (VO 4 ) 2 and CaWO 4 phases coexist in the sintered ceramics, and no secondary phases can be detected in the composite, implying the good chemical compatibility between the two phases. The near-zero temperature coefficients of the resonant frequency (s f ) could be achieved by adjusting the relative content of the two phases owing to their opposite s f values. The composite ceramics with 60 wt% CaWO 4 sintered at 900°C exhibited desirable microwave dielectric properties of the quality factor Q 9 f * 37,000 GHz, dielectric constant e r * 12, and s f * -1.4 ppm/°C.

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“…There is a considerable amount of microwave equipment, such as cell-phones (0.9~1.8 GHz), GPS (global positioning system; 1.5 GHz), WLAN (wireless local area network), Bluetooth (2.4 GHz) and satellite communications (dozen of GHz) [1,2]. These electronic devices have been developing using several packaging technologies including SoP (system-on-a-package), MCM (multi-chip module) and SMD (surface mounting device) [3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

“…Glass-ceramics are expected to have the required properties because the dielectric properties can be easily controlled and the material has excellent mechanical strength. Generally, LTCC materials are divided into two classes: a substrate material with a low dielectric constant (below 10); and an embedded capacitor material that is suitable for multifunctions and has an intermediate or high dielectric constant [5,6].…”

Section: Introductionmentioning

confidence: 99%

Thermal and dielectric properties of glass-ceramics sintered based on diopside and anorthite composition

et al. 2007

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To develop a low dielectric constant of LTCC substrate, we studied the effect of the sintering and crystallization behavior on the dielectric properties of a sintered body by mixing a CaO-Al 2 O 3 -SiO 2 frit and a CaO-MgO-SiO 2 frit for a low dielectric constant of LTCC substrates. In this work, the two glass frits were mixed at different proportions and sintered at 860~920°C. After sintering at 900 o C for 1h, the glass frits crystallized into diopside and anorthite. The sintered bodies exhibited dielectric properties, ɛ r =6~8.6 at 1 GHz, which is an essential condition for a substrate in microwave devices. The results suggest that the glass-ceramic can be applied to low dielectric LTCC materials in the electronics packaging industry.

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Low-temperature sintering-microwave dielectric property relations in Ba3(VO4)2 ceramic

Cited by 116 publications

References 11 publications

Dielectric response and pyroelectric properties of lead-free ferroelectric Ba₃(VO₄)₂

Dielectric response and pyroelectric properties of lead-free ferroelectric Ba₃(VO₄)₂

Microstructure and microwave dielectric properties of low-temperature sinterable (1 − x)Ba3(VO4)2–xCaWO4 composite ceramics

Thermal and dielectric properties of glass-ceramics sintered based on diopside and anorthite composition

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Low-temperature sintering-microwave dielectric property relations in Ba3(VO4)2 ceramic

Cited by 116 publications

References 11 publications

Dielectric response and pyroelectric properties of lead-free ferroelectric Ba3(VO4)2

Dielectric response and pyroelectric properties of lead-free ferroelectric Ba3(VO4)2

Microstructure and microwave dielectric properties of low-temperature sinterable (1 − x)Ba3(VO4)2–xCaWO4 composite ceramics

Thermal and dielectric properties of glass-ceramics sintered based on diopside and anorthite composition

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Dielectric response and pyroelectric properties of lead-free ferroelectric Ba₃(VO₄)₂

Dielectric response and pyroelectric properties of lead-free ferroelectric Ba₃(VO₄)₂