Effect of sintering temperature on microstructure and dielectric properties in (Dy, Mg)-doped BaTiO₃ (Dy 및 Mg가 첨가된 BaTiO₃에서 소결 온도가 미세구조와 유전특성에 미치는 영향)

Jong-Won Woo (우종원); Sung-Hyun Kim (김성현); Moonhee Choi (최문희); Sang-Chae Jeon (전상채)

doi:10.6111/JKCGCT.2022.32.5.175

Effect of sintering temperature on microstructure and dielectric properties in (Dy, Mg)-doped BaTiO₃

Journal of the Korean Crystal Growth and Crystal Technology
Abbr : J. Korean Cryst. Growth Cryst. Technol.
2022, 32(5), pp.175-182
DOI : 10.6111/JKCGCT.2022.32.5.175
Publisher : The Korea Association Of Crystal Growth, Inc.
Research Area : Engineering > Materials Science and Engineering
Received : August 25, 2022
Accepted : September 14, 2022
Published : October 31, 2022

Jong-Won Woo ¹, Sung-Hyun Kim ¹, Moonhee Choi ², Sang-Chae Jeon ¹

¹창원대학교
²한국세라믹기술원

Accredited

ABSTRACT

Rare-earth elements were doped with Mg to enhance the temperature stability of dielectric properties of BaTiO₃ for its application to MLCC (Multi-Layer Ceramic Capacitor). The additives strongly affect both grain growth and densification behaviors during sintering, and hence dielectric properties. The additive effects therefore should be examined in each system with different additives. This study investigated the crystal structure, grain growth and densificationbehaviors and related variations in dielectric constant with respect to sintering temperature. Dielectric constant appears to be varied with grain size in a temperature range between 1200 and 1300°C, suggesting the importance of grain size control. The temperature dependence of grain size variation was well explained by an established theory correlating the grain growth behavior with grain boundary structure. This accordance provides a basis for sintering technique to control grain growth thus to improve dielectric constant in rare-earth doped BaTiO₃.

KEYWORDS

BaTiO₃, Rare earth, Grain growth, Densification, Dielectric property

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* References for papers published after 2023 are currently being built.

[journal] T. Nagai / 2000 / Effect of MgO Doping on the phase transformations of BaTiO3 / J. Am. Ceram. Soc 83(1) : 107~

[book] C. Randall / 2004 / History of the first ferroelectric oxide, BaTiO3 / Materials Research Institute, The Pennsylvania State University, University Park : 1~

[journal] 노태민 / 2011 / Electrical Properties and Temperature Stability of Dysprosium and Erbium Co-doped Barium Titanate with Perovskite Structure for X7R MLCCs / 한국세라믹학회지 / 한국세라믹학회 48(4) : 323~327

[journal] 전상채 / 2020 / TCC behavior of a shell phase in core/shell structure formed in Y-doped BaTiO3:an individual observation / 한국결정성장학회지 / 한국결정성장학회 30(3) : 110~116

[journal] 박형규 / 2012 / Overview on the Technologies for Extraction of Rare Earth Metals / 자원리싸이클링 / 한국자원리싸이클링학회 21(3) : 74~83

[thesis] M. Kahn / 1969 / Effects of sintering and grain growth on the distribution of niobium addition in barium titanate ceramics / Ph.D / Pennsylvania State University

[book] B.S. Rawal / 1981 / Grain Boundary Phenomena in Electronic Ceramics / American Ceramic Society : 172~178

[journal] D. Hennings / 1984 / Temperature-stable dielectrics based on chemically inhomogeneous BaTiO3 / J. Am. Ceram. Soc 67 : 249~

[journal] H.Y. Lu / 1990 / Core-shell structures in ZrO2-modified BaTiO3 ceramic / J. Am. Ceram. Soc 73 : 3562~

[journal] H. Chazono / 1995 / Sintering characteristics and formation mechanisms of ‘Core-Shell’ structure in BaTiO3-Nb2O5-Co3O5 ternary system / Jpn. J. Appl. Phys 34 : 5354~

[journal] S.C. Jeon / 2012 / The mechanism of core/shell structure formation during sintering of BaTiO3-based ceramics / J. Am. Ceram. Soc 95 : 2435~

[journal] F.D. Morrison / 2001 / Charge compensation mechanisms in La-doped BaTiO3 / J. Electroceram 6 : 219~

[journal] F.D. Morrison / 2001 / An alternative explanation for the origin of the resistivity anomaly in La-doped BaTiO3 / J. Am. Ceram. Soc 84 : 474~

[journal] J.I. Itoh / 2002 / Oxygen defects related to electrical properties of La-doped BaTiO3 / Jpn. J. Appl. Phys 41 : 3798~

[journal] V. Paunović / 2010 / Influence of rare-earth additives (La, Sm and Dy) on the microstructure and dielectric properties of doped BaTiO3 ceramics / Sci. Sintering 42 : 69~

[journal] 박금진 / 2009 / The Doping Effects of Intermediate Rare-earth Ions (Dy, Y and Ho) on BaTiO₃ Ceramics / 한국세라믹학회지 / 한국세라믹학회 46(2) : 181~188

[journal] S.C. Jeon / 2014 / Effect of core/shell volumetric ratio on dielectric-temperature behavior in (Mg, Y)-doped BaTiO3 / J. Adv. Ceram 3 : 76~

[journal] S.C. Jeon / 2015 / Oxidation-induced strain relaxation and related dielectric-temperature behavior in core/shell grained BaTiO3 / J. Electroceram 35 : 129~

[journal] S.C. Jeon / 2013 / Coherency strain enhanced dielectric-temperature property of rare-earth doped BaTiO3 / Appl. Phys. Lett 102 : 112915~

[journal] C.H. Kim / 2008 / Role of yttrium and magnesium in the formation of core-shell structure of BaTiO3 grains in MLCC / J. Eur. Ceram. Soc 28 : 1213~

[journal] C.S. Chen / 2006 / TEM microstructures of X7R type base-metal electrode BaTiO3 capacitor materials co-doped with MgO/Y2O3 additives / Ferroelectrics 332 : 41~

[journal] S.C. Jeon / 2022 / Interface structure dependent step free energy and grain growth behavior of core/shell grains in (Y, Mg)-doped BaTiO3 containing a liquid phase / J. Eur. Ceram. Soc 42 : 2804~

[journal] R.D. Shannon / 1976 / Revised effective ionic radii and systematic studies of interatomic distances in halides and chalcogenides / Acta Cryst A32 : 751~

[journal] S.D. Cho / 2002 / Study on the effects of BaTiO3 particle size on dielectric constant and leakage current of epoxy/BaTiO3 composite films for embedded capacitors / J. Microelectron. Electron. Packag 9(2) : 11~

[journal] P. Zheng / 2018 / Grainsize effects on dielectric and piezoelectric properties of poled BaTiO3 ceramics / Acta Mater 60 : 5022~

[book] S.J.L. Kang / 2004 / Sintering: densification, grain growth and microstructure / Elsevier

[journal] Y.I. Jung / 2009 / Coarsening of polyhedral grains in a liquid matrix / J. Mater. Res 24 : 2949~

[journal] Y.H. Heo / 2011 / Effect of step free energy on delayed abnormal grain growth in a liquid phase-sintered BaTiO3 model system / J. Eur. Ceram. Soc 31 : 755~

[journal] K.S. Moon / 2011 / Effect of TiO2 addition on grain shape and grain coarsening behavior in 95Na1/2Bi1/2TiO3-5BaTiO3 / J. Eur. Ceram. Soc 31 : 1915~

[journal] S.M. An / 2011 / Boundary structural transition and grain growth behavior in BaTiO3 with Nd2O3 doping and oxygen partial pressure change / Acta Mater 59 : 1964~

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Journal of the Korean Crystal Growth and Crystal Technology 2023 KCI Impact Factor : 0.19

Effect of sintering temperature on microstructure and dielectric properties in (Dy, Mg)-doped BaTiO₃

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* References for papers published after 2023 are currently being built.

Journal of the Korean Crystal Growth and Crystal Technology 2023 KCI Impact Factor : 0.19

Effect of sintering temperature on microstructure and dielectric properties in (Dy, Mg)-doped BaTiO₃

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