Crystal structure and dielectric properties of complex perovskite Ba[(Co1-xMgx)1/3Nb2/3]O3 microwave ceramics
LIU Liang1, HUANG Zonglian1, XIAO Ya2, CHENG Lijin3, LIU Shaojun1
1. Powder Metallurgy Research Institute, Central South University, Changsha 410083, China; 2. Hunan Provincial Institute of Cultural Relics and Archaeology, Changsha 410008, China; 3. State Key Laboratory of Material Processing and Die & Mould Technology,Huazhong University of Science and Technology, Wuhan 430074, China;
Abstract：Ba[(Co1-xMgx)1/3Nb2/3]O3(0.0≤x≤0.4) microwave ceramics were prepared by the conventional solid reaction method. The relationship between the B site 1:2 ordering and microwave dielectric properties of Mg-doped Ba(Co1/3Nb2/3)O3 microwave ceramics were clarified using dielectric performance test XRD, Raman and TEM. The results show that the Q∙f of Mg-doped Ba(Co1/3Nb2/3)O3 ceramics is increased because the B site 1:2 ordering degree is enhanced. The highest ordering degree of the ceramics doped with x=0.2 is obtained at 1 420 ℃. After annealing at 1 300 ℃ for 24 h, the ordering degree of 1:2 in B site is further improved, and the second phase is eliminated. Microwave properties with εr=30.94, Q∙f=63 161 GHz, τf =4.1 ppm/℃ comparable to those of conventional Ta based composites perovskite microwave ceramics are obtained.
[1] PENG S, LUO G, WU M, et al.Effect of ZrO2 doping on the microwave dielectric properties of Ba(Mg1/3Nb2/3)O3 ceramics[J]. Journal of Electronic Materials, 2016, 46(4): 2172-2178. [2] SUN T L, MAO M M, CHEN X M.Effects of annealing atmospheres on microwave dielectric properties of Ba[(Mg1-xCox)1/3Nb2/3]O3 ceramics[J]. Materials Research Bulletin, 2015, 68(2015): 142-149. [3] HIGUCHI Y, TAMURA H.Recent progress on the dielectric properties of dielectric resonator materials with their applications from microwave to optical frequencies[J]. Journal of the European Ceramic Society, 2003, 23(14): 2683-2688. [4] SEBASTIAN M T, UBIC R, JANTUNEN H.Low-loss dielectric ceramic materials and their properties[J]. International Materials Reviews, 2015, 60(7): 392-412. [5] HUGHES H, IDDLES D M, REANEY I M.Niobate-based microwave dielectrics suitable for third generation mobile phone base stations[J]. Applied Physics Letters, 2001, 79(18): 2952-2954. [6] LIU S, TAYLOR R, PETROVIC N S, et al.Experimental and theoretical investigation of the structural, chemical, electronic, and high frequency dielectric properties of barium cadmium tantalate-based ceramics[J]. Journal of Applied Physics, 2005, 97(1): 1-8. [7] DAVIES P K, TONG J.Effect of ordering-induced domain boundaries on low-loss BZT-BaZrO3 perovskite microwave dielectrics[J]. Journal of the American Ceramic Society, 1997, 80(7): 1727-1740. [8] KIM I T, KIM Y H, CHUNG S J.Order-disorder transition and microwave dielectric properties of Ba(Ni1/3Nb2/3)O3 ceramics[J]. Japanese Journal of Applied Physics, 1995, 34(8R): 4096-4103. [9] DONG H, SHI F.Effects of Synthesis temperatures on crystal structures and lattice vibration modes of (Ba0.3Sr0.7) [(Zn1-xMgx)1/3Nb2/3]O3 solid solutions[J]. Metallurgical and Materials Transactions A, 2012, 43(13): 5128-5139. [10] KIM I T, KIM Y H.Ordering and microwave dielectric properties of Ba(Ni1/3Nb2/3)O3 ceramics[J]. Journal of Materials Research, 1996, 12(2): 518-525. [11] WANG Z F, HUANG B Y, WANG L X, et al.Low loss (Ba1-xSrx)(Co1/3Nb2/3)O3 solid solution: phase evolution, microstructure and microwave dielectric properties[J]. Journal of Materials Science: Material Electron, 2015, 26: 4273-4279. [12] GALASSO F, PYLE J.Ordering in compounds of the A(B′0.33- Ta0. 67)O3 type[J]. Inorganic Chemistry, 1963, 2(3): 482-484. [13] DIAS A, CIMINELLI V S T, MATINAGA F M, et al. Raman scattering and X-ray diffraction investigations on hydrothermal barium magnesium niobate ceramics[J]. Journal of the European Ceramic Society, 2001, 21(15): 2739-2744. [14] REANEY I M.Microwave dielectric ceramics for resonators and filters in mobiles phone networks[J]. Journal of the American Ceramic Society, 2006, 89(7): 2063-2072. [15] ZHANG S, DEVONPORT A, NEWMAN N, et al.Main source of microwave loss in transition-metal-doped Ba(Zn1/3Ta2/3)O3 and Ba(Zn1/3Nb2/3)O3 at cryogenic temperatures[J]. Journal of the American Ceramic Society, 2015, 98(4): 1188-1194. [16] LIU H X, TIAN Z Q, WANG H, et al.New microwave dielectric ceramics with near-zero τf in the Ba(Mg1/3Nb2/3)O3- Ba(Ni1/3Nb2/3)O3 system[J]. Journal of Materials Science, 2004, 39(13): 4319-4320. [17] SCOTT R I, THOMAS M, HAMPSON C.Development of low cost, high performance Ba(Zn1/3Nb2/3)O3 based materials for microwave resonator applications[J]. Journal of the European Ceramic Society, 2003, 23(14): 2467-2471. [18] KIM M H, JEONG Y H, NAHM S, et al.Effect of B2O3 and CuO additives on the sintering temperature and microwave dielectric properties of Ba(Zn1/3Nb2/3)O3 ceramics[J]. Journal of the European Ceramic Society, 2006, 26(10/11): 2139-2142. [19] AHN C W, NAHM S, LIM Y S, et al.Microstructure and microwave dielectric properties of Ba(Co1/3Nb2/3)O3 ceramics[J]. Japanese Journal of Applied Physics, 2002, 41(8): 5277-5280. [20] DAVIES P K, TONG J.Effect of ordering-induced domain boundaries on low-loss BZT-BaZrO3 perovskite microwave dielectrics[J]. Journal of the American Ceramic Society, 1997, 80(7): 1727-1740. [21] ENDO K, FUJIMOTO K, MURAKAWA K.Dielectric properties of ceramics in Ba(Co1/3Nb2/3)O3-Ba(Zn1/3Nb2/3)O3 solid solution[J]. Journal of the American Ceramic Society, 1987, 70(9): 215-218. [22] MOLODETSKY I, DAVIES P K.Effect of Ba(Y1/2Nb1/2)O3 and BaZrO3 on the cation order and properties of Ba(Co1/3Nb2/3)O3 microwave ceramics[J]. Journal of the European Ceramic Society, 2001, 21(15): 2587-2591. [23] AZOUGH F, LEACH C, FREER R.Effect of nonstoichiometry on the structure and microwave dielectric properties of Ba(Co1/3Nb2/3)O3 ceramics[J]. Journal of the European Ceramic Society, 2006, 26(14): 2877-2884. [24] SURENDRAN K P, MOHANAN P, JACOB M V.The effect of dopants on the microwave dielectric properties of Ba(Mg0.333Ta0.67)O3[J]. Journal of Applied Physics, 2005, 98(9): 1-9. [25] KIM E S, YOON K H.Effect of nickel on microwave dielectric properties of Ba(Mg1/3Ta2/3)O3[J]. Journal of Materials Science, 1994, 29(3): 830-834. [26] YOU C C, HUANG C L, WEI C C, et al.Improved high-Q dielectric resonator sintered at low firing temperature[J]. Japanese Journal of Applied Physics, 1995, 34: 1911-1915. [27] HAKKI B W, COLEMAN P D.A dielectric resonator method of measuring inductive capacities in the millimeter range[J]. IRE Transactions on Microwave Theory and Techniques, 2002, 8(4): 402-410. [28] COURTNEY W E.Analysis and evaluation of a method of measuring the complex permittivity and permeability microwave insulators[J]. IEEE Transactions on Mocrowave Theory and Techniques, 1970, 18(8): 476-485. [29] SHANNON R D.Revised effective ionic radii and systematic studies of interatomie distances in halides and chaleogenides[J]. Acta Crystallographica, 1976, 32(SEP1): 751-767. [30] WU H, DAVIES P K.Influence of non-stoichiometry on the structure and properties of Ba(Zn1/3Nb2/3)O3 microwave dielectrics_ I. Substitution of Ba3W2O9[J]. Journal of the American Ceramic Society, 2006, 89(7): 2239-2249. [31] JACOBSO A J, COLLINS B M, FENDE B E F. A powder neutron and X-ray diffraction determination of the structure of Ba3Ta2ZnO9: An investigation of perovskite phases in the system Ba-Ta-Zn-O and the preparation of Ba2TaCdO5.5 and Ba2CeInO5.5[J]. Acta Crystallographica Section B: Structural Crystallography and Crystal Chemistry, 1976, 32(4): 1083-1087. [32] WU H, DAVIES P K.Influence of non-stoichiometry on the structure and properties of Ba(Zn1/3Nb2/3)O3 microwave dielectrics_ II. compositional variations in Pure BZN[J]. Journal of the American Ceramic Society, 2006, 89(7): 2050-2063. [33] KIM B K, HAMAGUCHI H O, KIM I T, et al.Probing of 1:2 ordering in Ba(Ni1/3Nb2/3)O3 and Ba(Ni1/3Nb2/3)O3 ceramics by XRD and Raman Spectroscopy[J]. Journal of the American Ceramic Society, 1995, 78(11): 3117-3120. [34] CHEN M Y, CHIA C T, LIN I N, et al.Microwave properties of Ba(Mg1/3Ta2/3)O3, Ba(Mg1/3Nb2/3)O3 and Ba(Co1/3Nb2/3)O3 ceramics revealed by Raman scattering[J]. Journal of the European Ceramic Society, 2006, 26(10/11): 1965-1968. [35] DIAO C L, WANG C H, LUO N N, et al.First-principle calculation and assignment for vibrational spectra of Ba(Mg1/3Nb2/3)O3 microwave dielectric ceramic[J]. Journal of Applied Physics, 2014, 115(11): 1-12. [36] MOREIRA R L, MATINAGA F M, DIAS A.Raman- spectroscopic evaluation of the long-range order in Ba(B1/3′B2/3″)O3 ceramics[J]. Applied Physics Letters, 2001, 78(4): 428-430. [37] KIM Y W, PARK J H, PARK J G.Local cationic ordering behaviour in Ba(Mg1/3Nb2/3)O3 ceramics[J]. Journal of European Ceramics Society, 2004, 24(6): 1830-1834.
2018, Vol. 23 
