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Research Article | Open Access

Understanding microwave dielectric properties of (1−x)CaTiO3–xLaAlO3 ceramics in terms of A/B-site ionic-parameters

Zhanming DOU†, Gan WANG†, Juan JIANG( ), Fan ZHANG, Tianjin ZHANG( )
Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Ministry of Education Key Laboratory for the Green Preparation and Application of Functional Materials and School of Material Science and Engineering, Hubei University, Wuhan 430062, China

† These authors contributed equally to this work.

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Abstract

We prepared (1−x)CaTiO3–xLaAlO3 (0 ≤ x ≤ 1) microwave dielectric ceramics using a conventional two-step solid-state reaction method, and investigated microwave dielectric properties of the ceramics in terms of A/B-site ionic-parameters. Ionic-parameters such as ionic polarizability, A-site bond valence, and ionic rattling were linked to the microwave dielectric properties. As the LaAlO3 content x in the (1−x)CaTiO3–xLaAlO3 ceramics increased from 0.3 to 0.7, the dielectric constant gradually decreased, which was attributed to the decrease of polarizability deviation and suppression of the cation rattling. The temperature coefficient of the resonant frequency decreased as the content of LaAlO3 increased because of the increase of A-site cation bond valence. The quality factor value (Q × f) increased as LaAlO3 content increased because of the enhancement of the order degree of B-site cation. A significant deterioration of the temperature coefficient of the resonant frequency and Q × f value was observed at the composition x = 0.5. These decreases were attributed to a phase transition from orthorhombic crystal (for x ≤ 0.5) to rhombohedral crystal (for x > 0.5).

Keywords

(1−x)CaTiO3–xLaAlO3 (CTLA) microwave dielectric ceramicsionic polarizabilitybond valencecation rattling effect

References

[1]
Jiang J, Fang D, Lu C, et al. Solid-state reaction mechanism and microwave dielectric properties of CaTiO3–LaAlO3 ceramics. J Alloys Compd 2015, 638: 443-447.
Crossref Google Scholar
[2]
Vidmar M, Golobič A, Meden A, et al. Sub-solidus phase relations and a structure determination of new phases in the CaO–La2O3–TiO2 system. J Eur Ceram Soc 2015, 35: 2801-2814.
Crossref Google Scholar
[3]
Zhang X, Zhang Y, Zhang J, et al. Microwave dielectric properties and thermally stimulated depolarization currents study of (1−x)Ba0.6Sr0.4La4Ti4O15–xTiO2 ceramics. J Am Ceram Soc 2014, 97: 3170-3176.
Crossref Google Scholar
[4]
Sebastian MT. Dielectric Materials for Wireless Communication. Elsevier Science Publishers, 2008: 165, 172.
[5]
Cho S-Y, Kim I-T, Hong KS. Microwave dielectric properties and applications of rare-earth aluminates. J Mater Res 1999, 14: 114-119.
Crossref Google Scholar
[6]
Grebenshchikov RG, Popova VF, Shirvinskaya AK. Phase diagrams of the LnAlO3–CaTiO3 (Ln = Nd, Sm) systems and polymorphism of CaTiO3. Glass Phys Chem+ 2003, 29: 194-199.
Crossref Google Scholar
[7]
Grebenshchikov RG, Popova VF, Shirvinskaya AK. Solid solutions in the LnAlO3–CaTiO3 (Ln = Dy, Y, Lu) systems. Glass Phys Chem+ 2003, 29: 479-483.
Crossref Google Scholar
[8]
Moon JH, Jang HM, Park HS, et al. Sintering behavior and microwave dielectric properties of (Ca, La)(Ti, Al)O3 ceramics. Jpn J Appl Phys 1999, 38: 6821-6826.
Crossref Google Scholar
[9]
Hou G, Wang Z, Zhang F. Sintering behavior and microwave dielectric properties of (1−x)CaTiO3–xLaAlO3 ceramics. J Rare Earth 2011, 29: 160-163.
Crossref Google Scholar
[10]
Khalyavin DD, Salak AN, Senos AMR, et al. Structure sequence in the CaTiO3–LaAlO3 microwave ceramics— Revised. J Am Ceram Soc 2006, 89: 1721-1723.
Crossref Google Scholar
[11]
Zhang C, Zuo R, Zhang J, et al. Structure-dependent microwave dielectric properties and middle-temperature sintering of forsterite (Mg1–xNix)2SiO4 ceramics. J Am Ceram Soc 2015, 98: 702-710.
Crossref Google Scholar
[12]
Huang C-L, Yang W-R, Yu P-C. High-Q microwave dielectrics in low-temperature sintered (Zn1−xNix)3Nb2O8 ceramics. J Eur Ceram Soc 2014, 34: 277-284.
Crossref Google Scholar
[13]
Li J, Han Y, Qiu T, et al. Effect of bond valence on microwave dielectric properties of (1−x)CaTiO3–x(Li0.5La0.5)TiO3 ceramics. Mater Res Bull 2012, 47: 2375-2379.
Crossref Google Scholar
[14]
Shannon RD. Dielectric polarizabilities of ions in oxides and fluorides. J Appl Phys 1993, 73: 348-366.
Crossref Google Scholar
[15]
Brese NE, O’Keeffe M. Bond-valence parameters for solids. Acta Cryst 1991, B47: 192-197.
Crossref Google Scholar
[16]
Zhang P, Zhao Y, Wang X. The correlations between electronic polarizability, packing fraction, bond energy and microwave dielectric properties of Nd(Nb1−xSbx)O4 ceramics. J Alloys Compd 2015, 644: 621-625.
Crossref Google Scholar
[17]
Shannon RD, Dickinson JE, Rossman GR. Dielectric constants of crystalline and amorphous spodumene, anorthite and diopside and the oxide additivity rule. Phys Chem Miner 1992, 19: 148-156.
Crossref Google Scholar
[18]
Fu MS, Ni L, Chen XM. Abnormal variation of microwave dielectric properties in A/B site co-substituted (Ca1−0.3xLa0.2x)[(Mg1/3Ta2/3)1−xTix]O3 complex perovskite ceramics. J Eur Ceram Soc 2013, 33: 813-823.
Google Scholar
[19]
Cho YS, Yoon KH, Lee BD, et al. Understanding microwave dielectric properties of Pb-based complex perovskite ceramics via bond valence. Ceram Int 2004, 30: 2247-2250.
Crossref Google Scholar
[20]
Kim ES, Chun BS, Freer R, et al. Effects of packing fraction and bond valence on microwave dielectric properties of A2+B6+O4 (A2+: Ca, Pb, Ba; B6+: Mo, W) ceramics. J Eur Ceram Soc 2010, 30: 1731-1736.
Crossref Google Scholar
[21]
Li L, Cai H, Yu X, et al. Structure analysis and microwave dielectric properties of CaxZn1−xSn0.08Ti1.92Nb2O10 ceramics. J Alloys Compd 2014, 584: 315-321.
Crossref Google Scholar
[22]
Hirata T, Ishioka K, Kitajima M. Vibrational spectroscopy and X-ray diffraction of perovskite compounds Sr1−xMxTiO3 (M = Ca, Mg; 0 ≤ x ≤ 1). J Solid State Chem 1996, 124: 353-359.
Crossref Google Scholar
[23]
Balachandran U, Eror NG. Laser-induced Raman scattering in calcium titanate. Solid State Commun 1982, 44: 815-818.
Crossref Google Scholar
[24]
Zheng H, Csete de Györgyfalva GDC, Quimby R, et al. Raman spectroscopy of B-site order–disorder in CaTiO3-based microwave ceramics. J Eur Ceram Soc 2003, 23: 2653-2659.
Crossref Google Scholar
Journal of Advanced Ceramics
Volume 6 Issue 1,
March 2017
Pages 20-26
DOI: 10.1007/s40145-016-0212-2
Cite this article:
DOU Z, WANG G, JIANG J, et al. Understanding microwave dielectric properties of (1−x)CaTiO3–xLaAlO3 ceramics in terms of A/B-site ionic-parameters. Journal of Advanced Ceramics, 2017, 6(1): 20-26. https://doi.org/10.1007/s40145-016-0212-2

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Received: 04 September 2016
Revised: 10 September 2017
Accepted: 10 November 2017
Published: 02 March 2017
© The author(s) 2016

Open Access The articles published in this journal are distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons. org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
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