Microwave Dielectric Properties of LaPO4 Ceramics Synthesized by a Hydrothermal Method

doi:10.15541/jim20150016

Abstract

Abstract:

Lanthanum orthophosphate (LaPO₄) ceramics were obtained by using hydrothermal prepared powders and solid-state reaction prepared powders in a sintering temperature range of 1030-1340℃ and 1300-1460℃, respectively. The sintering and microwave dielectric properties of hydrothermal processed LaPO₄ ceramics were compared with those of solid-state reaction processed LaPO₄. The results showed that hydrothermal processed LaPO₄ had a higher sinterability and better microwave dielectric properties due to its much finer particle size when compared with solid-state reaction processed LaPO₄. The best microwave dielectric properties of the hydrothermal processed LaPO₄ ceramics were obtained when the ceramics sintered at 1260℃ for 2 h with a permittivity~10.2, a Q×f value about 129704 GHz (at 10.2 GHz) and a temperature coefficient value of -58.6×10^-6/℃. The Q×f value of hydrothermal processed LaPO₄ ceramics was 2.47 times greater than that of solid-state reaction processed LaPO₄ ceramics, while the sintering temperature of the former was 140℃ lower than that of the latter in the literature.

Key words: microwave dielectric properties, hydrothermal synthesis, lanthanum orthophosphate, sintering behavior

CLC Number:

TQ174

XIE Hui-Dong, LI Fei, CHEN Chao, XI Hai-Hong, SHI Ling. Microwave Dielectric Properties of LaPO₄ Ceramics Synthesized by a Hydrothermal Method[J]. Journal of Inorganic Materials, 2015, 30(8): 882-886.

Figures/Tables 5

Fig. 1 TEM, high-resolution TEM images and EDAX spectrum of the H-LaPO4 powders (a) TEM images; (b) High-resolution TEM images; (c) EDAX spectrum

Fig. 2 XRD patterns of the LaPO4 powders and ceramics

Fig. 3 SEM images of fractured surfaces of the H-LaPO4 ceramics sintered at different temperatures (a) 1140℃; (b) 1180℃; (c) 1220℃; (d) 1260℃; (e) 1300℃; (f) 1340℃

Fig. 4 Relative densities of H-LaPO4 ceramics and SSR-LaPO4 ceramics

Fig. 5 Microwave dielectric properties (permittivity, Q×f value) of H-LaPO4 ceramics and SSR-LaPO4 ceramics as a function of sintering temperature (a) H-LaPO4 ceramics; (b) SSR-LaPO4 ceramics

References 30

[1]	WU S P, CHEN D F, JIANG C, et al.Synthesis of monoclinic CaSnSiO5 ceramics and their microwave dielectric properties.Mater. Lett., 2013, 91: 239-241.
[2]	LI Z F, WU W J, LIU F, et al.Microwave dielectric properties of La4Ti3O12 ceramics.Mater. Lett., 2014, 118: 24-26.
[3]	BANG J.Microwave dielectric properties of MgCo2(VO4)2 ceramics synthesized by a Sol-Gel method.J. Eur. Ceram. Soc., 2007, 27(13/14/15): 3855-3859.
[4]	HUANG C L, WANG J J, HUANG C Y.Sintering behavior and microwave dielectric properties of nano alpha-alumina.Mater. Lett., 2005, 59(28): 3746-3749.
[5]	ZHOU Y Z, ZHANG H Y, XIE H D, et al.A novel sensor based on LaPO4 nanowires modiﬁed electrode for sensitive simultaneous determination of dopamine and uric acid.Electrochim. Acta, 2012, 75: 360-365.
[6]	WANG R G, PAN W, CHEN J, et al.Synthesis and sintering of LaPO4 powder and its application.Mater. Chem. Phys., 2003, 79(1): 30-36.
[7]	GUO D L, HU C G, XI Y.Synthesis and magnetic property of Fe doped LaPO4 nanorods.Appl. Surf. Sci., 2013, 268: 458-463.
[8]	CHEN P, MAH T I.Synthesis and characterization of lanthanum phosphate sol for fibre coating.J. Mater. Sci., 1997, 32(14): 3863-3867.
[9]	MI K, NI Y H, XU Y W, et al.A simple mixed-solvothermal route for LaPO4 nanorods: synthesis, characterization, affecting factors and PL properties of LaPO4:Ce3+.J. Colloid. Interf. Sci., 2011, 356(2): 490-495.
[10]	VISTOVSKYY V, MITINA N, SHAPOVAL A, et al.Luminescence properties of LaPO4-Eu nanoparticles synthesized in the presence of surface active oligoperoxide as template.Opt. Mater., 2012, 34(12): 2066-2070.
[11]	JUNG H K, OH J S, SEOK S I, et al.Preparation and luminescence properties of LaPO4:Er,Yb nanoparticles.J. Lumin., 2005, 114(3/4): 307-313.
[12]	PARK S M, ZHEN Z, PARK D H.Preparation of Eu-doped LaPO4 films using successive-ionic-layer-adsorption-and-reaction.Mater. Lett., 2010, 64(16): 1861-1864.
[13]	YANG Y.Synthesis and luminescent properties of LaPO4:Eu3+ microspheres.Mater. Sci. Eng. B, 2013, 178(11): 807-810.
[14]	LI Y, ZHENG Y H, WANG Q M, et al.LaPO4:Eu3+ in situ formed in polymeric gels and its photophysical properties.Opt. Mater., 2012, 34(7): 1019-1022.
[15]	GAO R, QIAN D, LI W.Sol-Gel synthesis and photoluminescence of LaPO4:Eu3+ nanorods.Trans. Nonferrous Met. Soc. China, 2010, 20(3): 432-436.
[16]	LI G H, LI L L, LI M M, et al.Facile synthesis and luminescent properties of LaPO4: Eu3+, Sm3+ nanorods via a designed two- step hydrothermal method.Mater. Chem. Phys., 2012, 133(1): 263-268.
[17]	YANG M, YOU H P, LIANG Y L, et al.Morphology controllable and highly luminescent monoclinic LaPO4:Eu3+ microspheres.J. Alloys Compd., 2014, 582: 603-608.
[18]	FANG Y P, XU A W, SONG R Q, et al.Systematic synthesis and characterization of single-crystal lanthanide orthophosphate nanowires.J. Am. Chem. Soc., 2003, 125(51): 16025-16034.
[19]	BYRAPPA K, DEVARAJU M K, PARAMESH J R, et al.Hydrothermal synthesis and characterization of LaPO4 for bio-imaging phosphors.J. Mater. Sci., 2008, 43(7): 2229-2233.
[20]	NIU N, YANG P P, WANG Y, et al.LaPO4:Eu3+, LaPO4:Ce3+, and LaPO4:Ce3+,Tb3+ nanocrystals: Oleic acid assisted solvothermal synthesis, characterization, and luminescent properties.J. Alloys Compd., 2011, 509(6): 3096-3102.
[21]	YANG P P, QUAN Z W, LI C X, et al.Solvothermal synthesis and luminescent properties of monodisperse LaPO4:Ln (Ln = Eu3+, Ce3+, Tb3+) particles.J. Solid State Chem., 2009, 182(5): 1045-1054.
[22]	MEYSSAMY H, RIWOTZKI K, KORNOWSKI A, et al.Wet-chemical synthesis of doped colloidal nanomaterials: particles and fibers of LaPO4:Eu, LaPO4:Ce, and LaPO4:Ce,Tb.Adv. Mater., 1999, 11(10): 840-844.
[23]	NARASIMHA B, CHOUDHARY R N P, RAO K V. Dielectric properties of LaPO4 ceramics.J. Mater. Sci., 1988, 23(4): 1416-1418.
[24]	BREGIROUX D, LUCAS S, CHAMPION E, et al.Sintering and microstructure of rare earth phosphate ceramics REPO4 with RE = La, Ce or Y.J. Eur. Ceram. Soc., 2006, 26(3): 279-287.
[25]	CHO I S, CHOI G K, AN J S, et al.Sintering, microstructure and microwave dielectric properties of rare earth orthophosphates, RePO4 (Re = La, Ce, Nd, Sm, Tb, Dy, Y, Yb).Mater. Res. Bull., 2009, 44(1): 173-178.
[26]	ZHOU H F, LIU X B, CHEN X L, et al.Preparation, phase structure and microwave dielectric properties of CoLi2/3Ti4/3O4 ceramic.Mater. Res. Bull., 2012, 47(5): 1278-1280.
[27]	XIA W S, LI L X, ZHANG P, et al.Effects of CaF2 addition on sintering behavior and microwave dielectric properties of ZnTa2O6 ceramics.Mater. Lett., 2011, 65(21/22): 3317-3319.
[28]	LUCAS S, CHAMPION E, BREGIROUX D, et al.Rare earth phosphate powders RePO4. nH2O (Re=La, Ce or Y)—Part I. Synthesis and characterization.J. Solid State Chem., 2004, 177: 1302-1311.
[29]	HATADA N, NAGAI T, NOSE Y, et al.Reinvestigation of the phase equilibria in the La2O3-P2O5 system.J. Phase Equilib. Diff., 2013, 34(3): 196-201.
[30]	RAJESH K, SIVAKUMAR B, KRISHNA PILLAI P, et al.Synthesis of nanocrystalline lanthanum phosphate for low temperature densification to monazite ceramics.Mater. Lett. 2004, 58(11): 1687-1691.

Microwave Dielectric Properties of LaPO₄ Ceramics Synthesized by a Hydrothermal Method

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