Browse > Article
http://dx.doi.org/10.6111/JKCGCT.2010.20.6.249

Dielectric properties of A-site defect perovskite La1/3NbO3 single crystal  

Sohn, Jeong-Ho (The Faculty of Liberal Arts, Kaya University)
Abstract
After the specimen of A-site defect perovskite $La_{1/3}NbO_3$ single crystal was manufactured, the dielectric properties were studied between the temperature range of 10 and 800 K. The dielectric anomaly appeared at 50 K and 650 K, and, at about 650 K, the thermal hysteresis of dielectric constant was shown. The ac-conductivity of bulk showed the lowest activation energy of 0.43 eV at 560~690 K. Based on the results, it is assumed that the dielectric anomaly at 50K and 650 K was due to the antiparallel shift of $Nb^{5+}$-ion and the rearrangement of $Nb^{3+}$-ion, respectively.
Keywords
$La_{1/3}NbO_3$ single crystal; A-site defect perovskite; Dielectric property; ac-conductivity;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Y. Kawakami, Y. Ikuta and M. Wakihara, "Ionic conduction of lithium for perovskite-type compounds, $Li_xLa_{(1-x)/3}NbO_3$ and $(Li_{0.25}La_{0.25})_{1-x}Sr_{0.5x}NbO_3$", J. Solid State Electrochem. 2 (1998) 206.   DOI   ScienceOn
2 B.J. Kennedy, C.J. Howard, Y. Kubota and K. Kato, "Phase transition behaviour in the A-site deficient perovskite oxide $La_{1/3}NbO_3$", J. Solid State Chem. 177 (2004) 4552.   DOI   ScienceOn
3 J.E. Bauerle, "Study of solid electrolyte polarization by a complex admittance method", J. Phys. Chem. Solids 30 (1969) 2657.   DOI   ScienceOn
4 A.N. Salak, D.D. Khalyavin, A.M.R. Senos, P.Q. Mantas and V.M. Ferreira, "Structure-dependent microwave dielectric properties of $(1-x)La(Mg_{1/2}Ti_{1/2})O_{3-x}La_{2/3}TiO_3$ ceramics", J. Appl. Phys. 98 (2005) 034101.   DOI   ScienceOn
5 H.P. Rooksby, E.A.D. White and S.A. Lanston, "Perovskite- type rare-earth niobates and tantalates", J. Am. Chem. Soc. 48 (1965) 447.
6 K.Y. Yang and K.Z. Fung, "Effect of $Li^+$ addition on crystal structure and electrical conduction of highly defective $La_{1/3}NbO_3$ perovskite", J. Phys. Chem. Solids 69 (2008) 393.   DOI   ScienceOn
7 K. Mizumoto and S. Hayashi, "Lithium ion conduction in A-site deficient perovskites $R_{1/4}Li_{1/4}TaO_3$ (R=La, Nd, Sm and Y)", Solid State Ionics 116 (1997) 263.
8 J.H. Sohn, M. Itoh and S.H. Cho, "Crystal growth and dielectric properties of $La_{1/3}MO_3$(M=Nb, Ta) by infrared floating zone method", J. Kor. Assoc. Cryst. Growth 5 (1995) 233.
9 D. Ridgly and R. Ward, "The preparation of a strontium- niobium bronze with the perovskite structure", J. Am. Chem. Soc. 77 (1955) 6132.   DOI
10 M. Abe and K. Uchino, "X-ray study of the deficient perovskite $La_{2/3}TiO_3$", Mat. Res. Bull 9 (1974) 147.   DOI   ScienceOn
11 P.N. Iyer and A.J. Smith, "Double oxides containing niobium, tantalum, or protactinium. III. Systems involving the rare earths", Acta Cryst. 23 (1967) 740.   DOI
12 E.J. Hubibregtse, D.B. Barker and G.C. Danielson, Phys. Rev. 82 (1951) 770.
13 W.V. Gool and A.G. Piken, "Lattice self-potentials and madelung constants for some compounds", J. Mater. Sci. 4 (1969) 95.   DOI
14 M. Yoshimura, T. Nakanura and T.S. Bull, Tokyo Institute of Technology 120 (1974) 13.
15 A.M. George and A.N. Virkar, "Mixed Iono-electronic Conduction in $\beta-LaNb_3O_9$", J. Phys. Chem. Solids 49 (1988) 743.   DOI   ScienceOn
16 R.D. Mitchell, Perovskites: Modern and Ancient (Almaz, Thunder Bay, ON, 2002).
17 B.J. Kennedy, C.J. Howard, Y. Kubota and K. Kato, "Phase transition behaviour in the a-site deficient perovskite oxide $La_{1/3}NbO_3$", J. Solid State Chem. 177 (2004) 4552.   DOI   ScienceOn
18 A.N. Salak, A.D. Shilia, M.V. Bushinski, N.M. Olekhnovich and N.P. Vyahaiko, "Structural regularities and dielectric phenomena in the compound series $PbB_{1/2}^{3+}Nb_{1/2}O_3$", Mater. Res. Bull 35 (2000) 1429.
19 N. Setter and L.E. Cross, "The role of B-site cation disorder in diffuse phase transition behavior of perovskite ferroelectrics", J. Appl. Phys. 51 (1980) 4356.   DOI   ScienceOn
20 A.N. Salak, N.P. Vyshatko, D.D. Khalyavin, O. Prokhnenko and V.M. Ferreira, "Low-temperature structural and dielectric phenomena in $La_{1/3}NbO_3$ and $La_{1/3}TaO_3$:comparative study", Appl. Phys. Lett. 93 (2008) 162903.   DOI   ScienceOn
21 D.D. Khalyavin, A.M.R. Senos, P.Q. Mantas, D.N. Argyriou, I.T. Gomes, L.G. Vieira and J.L. Riheiro, "Structure and dielectric characterization of a new A-site deficient $La_{5/3}MgTaO_6$ perovskite", J. Solid State Chem. 180 (2007) 41.   DOI   ScienceOn