New double perovskites, LaBaTaNi1-xCoxO6: Structural, dielectric and magnetic studies

被引：4
作者：
Samal, S. L. [1 ]
Magdaleno, T. [2 ]
Ramanujachary, K. V. [2 ]
Lofland, S. E. [3 ]
Ganguli, A. K. [1 ]
机构：
[1] Indian Inst Technol Delhi, Dept Chem, New Delhi 110016, India
[2] Rowan Univ, Dept Chem, Glassboro, NJ 08028 USA
[3] Rowan Univ, Dept Phys, Glassboro, NJ 08028 USA
来源：
SOLID STATE SCIENCES | 2010年 / 12卷 / 08期
关键词：
Perovskites; Rietveld refinement; Dielectric properties; ORDERED DOUBLE-PEROVSKITE; ROOM-TEMPERATURE; CRYSTAL-STRUCTURE; MAGNETORESISTANCE; OXIDES; SR; BA;
D O I：
10.1016/j.solidstatesciences.2010.05.014
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Double perovskites of the type LaBaNi1-xCoxTaO6 (0 <= x <= 1) have been synthesized by solid state method. The compounds crystallize in the tetragonal space group, 14/m. Rietveld refinement has been carried out to determine the phase purity and to study the cation ordering. X-ray photoelectron spectroscopy confirms Co(II) in all compositions. The end members in LaBaNi1-xCoxTaO6 show high dielectric constant values. Antiferromagnetic ordering has been observed for all the compositions and the ordering temperature in LaBaNi1-xCoxTaO6 gradually decreases with increase in Co doping, which has been attributed to the decrease in covalence of Co/Ni-O bonds. (C) 2010 Elsevier Masson SAS. All rights reserved.
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收藏
页码：1382 / 1386
页数：5
相关论文
共 21 条
  • [1] SYNTHESIS, STRUCTURAL CHARACTERIZATION AND PROPERTIES OF PEROVSKITE-TYPE MIXED OXIDES - BALNBNIO6 (LN = LA, ND, B = SB, NB, TA)
    ALVAREZ, I
    LOPEZ, ML
    GONZALEZ, C
    JEREZ, A
    VEIGA, ML
    PICO, C
    [J]. SOLID STATE IONICS, 1993, 63-5 : 609 - 613
  • [2] [Anonymous], 2004, 86748 LAUR LOS AL NA
  • [3] THE CRYSTAL-STRUCTURE AND MAGNETIC-PROPERTIES OF SRLAFESNO6 AND SRLANISBO6
    ATTFIELD, MP
    BATTLE, PD
    BOLLEN, SK
    GIBB, TC
    WHITEHEAD, RJ
    [J]. JOURNAL OF SOLID STATE CHEMISTRY, 1992, 100 (01) : 37 - 48
  • [4] NEW COMPOUNDS WITH PEROVSKITE-LIKE STRUCTURES
    BLASSE, G
    [J]. JOURNAL OF INORGANIC & NUCLEAR CHEMISTRY, 1965, 27 (05): : 993 - &
  • [5] Magnetic frustration in (LaA)CoNbO6 (A = Ca, Sr, and Ba) double perovskites -: art. no. 174434
    Bos, JWG
    Attfield, JP
    [J]. PHYSICAL REVIEW B, 2004, 70 (17): : 1 - 8
  • [6] CHOY JH, 1989, J CHEM SOC DA, V11, P2335
  • [7] A STUDY OF THE NEW CUBIC, ORDERED PEROVSKITES BALAMRUO6(M=MG, FE, CO, NI, OR ZN) AND THE RELATED PHASES LA2MRUO6(M=MG, CO, NI, OR ZN) BY RU-99 MOSSBAUER-SPECTROSCOPY AND OTHER TECHNIQUES
    FERNANDEZ, I
    GREATREX, R
    GREENWOOD, NN
    [J]. JOURNAL OF SOLID STATE CHEMISTRY, 1980, 32 (01) : 97 - 104
  • [8] New double perovskites having low dielectric loss:: LaBaZnTaO6, LaSrZnNbO6, and Ba2Zn0.5Ti0.5TaO6
    Ganguli, AK
    Grover, V
    Thirumal, M
    [J]. MATERIALS RESEARCH BULLETIN, 2001, 36 (11) : 1967 - 1975
  • [9] Metallic and nonmetallic double perovskites:: A case study of A2FeReO6 (A = Ca, Sr, Ba)
    Gopalakrishnan, J
    Chattopadhyay, A
    Ogale, SB
    Venkatesan, T
    Greene, RL
    Millis, AJ
    Ramesha, K
    Hannoyer, B
    Marest, G
    [J]. PHYSICAL REVIEW B, 2000, 62 (14): : 9538 - 9542
  • [10] Crystal structure and magnetic properties of B-site ordered perovskite-type oxides A2CuB′O6 (A = Ba, Sr; B′ = W, Te)
    Iwanaga, D
    Inaguma, Y
    Itoh, M
    [J]. JOURNAL OF SOLID STATE CHEMISTRY, 1999, 147 (01) : 291 - 295
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