Control of microwave dielectric properties in 0.42ZnNb2O6-0.58TiO2 ceramics by the quantitative analysis of phase transition

Do Kyun Kwon; Dong Wan Kim; Kug Sun Hong

Control of microwave dielectric properties in 0.42ZnNb₂O₆-0.58TiO₂ ceramics by the quantitative analysis of phase transition

Do Kyun Kwon, Dong Wan Kim, Kug Sun Hong

Research output: Contribution to journal › Article › peer-review

Abstract

Phase constitutions of ZnNb₂O₆-TiO₂ mixture ceramics were significantly changed according to the sintering temperature. Phase transition procedures and their effect on the microwave dielectric properties of 0.42ZnNb₂O₆-0.58TiO₂ were investigated using X-ray powder diffraction and a network analyzer. The fractions of the phases composing the mixture were calculated by measuring integral intensities of each reflection. The structural transitions in 0.42ZnNb₂O₆-0.58TiO₂ were interpreted as the association of two distinct steps: the columbite and rutile to ixiolite transition present at lower temperatures (900∼950 °C) and the ixiolite to mille transition at higher temperatures (1150∼1300 °C). These transitions caused considerable variation of microwave dielectric properties. Importantly, τ_f was modified to around 0 ppm/°C in two sintering conditions (at 925 °C for 2 hr and at 1300 °C for 2 hr), by the control of phase constitution.

Original language	English
Pages (from-to)	583-589
Number of pages	7
Journal	Metals and Materials International
Volume	8
Issue number	6
Publication status	Published - 2002 Dec
Externally published	Yes

Bibliographical note

Funding Information:
This work was supported by the Ministry of Science and Technology of Korea (“Support Project of National Research Program <2001>” supervised by KISTEP).

Keywords

Ceramics
Microwave dielectric properties
Phase transition
Quantitative analysis
ZnNbO-TiO

ASJC Scopus subject areas

Condensed Matter Physics
Mechanics of Materials
Metals and Alloys
Materials Chemistry

Cite this

@article{d58275b79a1b4325a1c8c7060a8ea3e1,

title = "Control of microwave dielectric properties in 0.42ZnNb2O6-0.58TiO2 ceramics by the quantitative analysis of phase transition",

abstract = "Phase constitutions of ZnNb2O6-TiO2 mixture ceramics were significantly changed according to the sintering temperature. Phase transition procedures and their effect on the microwave dielectric properties of 0.42ZnNb2O6-0.58TiO2 were investigated using X-ray powder diffraction and a network analyzer. The fractions of the phases composing the mixture were calculated by measuring integral intensities of each reflection. The structural transitions in 0.42ZnNb2O6-0.58TiO2 were interpreted as the association of two distinct steps: the columbite and rutile to ixiolite transition present at lower temperatures (900∼950 °C) and the ixiolite to mille transition at higher temperatures (1150∼1300 °C). These transitions caused considerable variation of microwave dielectric properties. Importantly, τf was modified to around 0 ppm/°C in two sintering conditions (at 925 °C for 2 hr and at 1300 °C for 2 hr), by the control of phase constitution.",

keywords = "Ceramics, Microwave dielectric properties, Phase transition, Quantitative analysis, ZnNbO-TiO",

author = "Kwon, {Do Kyun} and Kim, {Dong Wan} and Hong, {Kug Sun}",

note = "Funding Information: This work was supported by the Ministry of Science and Technology of Korea (“Support Project of National Research Program <2001>” supervised by KISTEP).",

year = "2002",

month = dec,

language = "English",

volume = "8",

pages = "583--589",

journal = "Metals and Materials International",

issn = "1225-9438",

publisher = "Korean Institute of Metals and Materials",

number = "6",

}

TY - JOUR

T1 - Control of microwave dielectric properties in 0.42ZnNb2O6-0.58TiO2 ceramics by the quantitative analysis of phase transition

AU - Kwon, Do Kyun

AU - Kim, Dong Wan

AU - Hong, Kug Sun

N1 - Funding Information: This work was supported by the Ministry of Science and Technology of Korea (“Support Project of National Research Program <2001>” supervised by KISTEP).

PY - 2002/12

Y1 - 2002/12

N2 - Phase constitutions of ZnNb2O6-TiO2 mixture ceramics were significantly changed according to the sintering temperature. Phase transition procedures and their effect on the microwave dielectric properties of 0.42ZnNb2O6-0.58TiO2 were investigated using X-ray powder diffraction and a network analyzer. The fractions of the phases composing the mixture were calculated by measuring integral intensities of each reflection. The structural transitions in 0.42ZnNb2O6-0.58TiO2 were interpreted as the association of two distinct steps: the columbite and rutile to ixiolite transition present at lower temperatures (900∼950 °C) and the ixiolite to mille transition at higher temperatures (1150∼1300 °C). These transitions caused considerable variation of microwave dielectric properties. Importantly, τf was modified to around 0 ppm/°C in two sintering conditions (at 925 °C for 2 hr and at 1300 °C for 2 hr), by the control of phase constitution.

AB - Phase constitutions of ZnNb2O6-TiO2 mixture ceramics were significantly changed according to the sintering temperature. Phase transition procedures and their effect on the microwave dielectric properties of 0.42ZnNb2O6-0.58TiO2 were investigated using X-ray powder diffraction and a network analyzer. The fractions of the phases composing the mixture were calculated by measuring integral intensities of each reflection. The structural transitions in 0.42ZnNb2O6-0.58TiO2 were interpreted as the association of two distinct steps: the columbite and rutile to ixiolite transition present at lower temperatures (900∼950 °C) and the ixiolite to mille transition at higher temperatures (1150∼1300 °C). These transitions caused considerable variation of microwave dielectric properties. Importantly, τf was modified to around 0 ppm/°C in two sintering conditions (at 925 °C for 2 hr and at 1300 °C for 2 hr), by the control of phase constitution.

KW - Ceramics

KW - Microwave dielectric properties

KW - Phase transition

KW - Quantitative analysis

KW - ZnNbO-TiO

UR - http://www.scopus.com/inward/record.url?scp=0036990737&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0036990737

SN - 1225-9438

VL - 8

SP - 583

EP - 589

JO - Metals and Materials International

JF - Metals and Materials International

IS - 6

ER -