Crystal Structures and Magnetic Properties of New Europium Melilites Eu2MSi2O7 (M = Mg, Mn) and Their Strontium Analogues

被引：37
作者：
Endo, Takashi [1 ]
Doi, Yoshihiro [1 ]
Wakeshima, Makoto [1 ]
Hinatsu, Yukio [1 ]
机构：
[1] Hokkaido Univ, Div Chem, Grad Sch Sci, Sapporo, Hokkaido 0600810, Japan
来源：
INORGANIC CHEMISTRY | 2010年 / 49卷 / 23期
关键词：
BOND-VALENCE PARAMETERS;
D O I：
10.1021/ic1011007
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Synthesis, crystal structures, and magnetic properties of melilite-type oxides A(2)MSi(2)O(7) (A = Sr, Eu; M = Mg, Mn) were investigated. These compounds crystallize in the melilite structure with space group P (4) over bar2(1)m. The Eu-151 Mossbauer measurements show that the Eu ions are in the divalent state. The Eu2MgSi2O7 is paramagnetic down to 1.8 K. Long-range antiferromagnetic ordering is observed at 3.4 K for Sr2MnSi2O7. On the other hand, the Eu2MnSi2O7 shows a ferrimagnetic transition at 10.7 K. From the magnetization and specific heat measurements, it is found that the Eu2+ (14 mu(B)) and Mn2+ (5 mu(B)) sublattices order antiferromagnetically. This result indicates that an interaction between f-d electrons (Eu-Mn) predominantly operate in this compound.
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收藏
页码：10809 / 10814
页数：6
相关论文
共 22 条
  • [1] Magnetic and dielectric properties of A2CoSi2O7 (A=Ca, Sr, Ba) crystals
    Akaki, M.
    Tozawa, J.
    Akahoshi, D.
    Kuwahara, H.
    [J]. 25TH INTERNATIONAL CONFERENCE ON LOW TEMPERATURE PHYSICS (LT25), PART 4: QUANTUM PHASE TRANSITIONS AND MAGNETISM, 2009, 150
  • [2] Blaha P., 2001, CALCULATING CRYST PR, V60
  • [3] BOND-VALENCE PARAMETERS FOR SOLIDS
    BRESE, NE
    OKEEFFE, M
    [J]. ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE, 1991, 47 : 192 - 197
  • [4] BOND-VALENCE PARAMETERS OBTAINED FROM A SYSTEMATIC ANALYSIS OF THE INORGANIC CRYSTAL-STRUCTURE DATABASE
    BROWN, ID
    ALTERMATT, D
    [J]. ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE, 1985, 41 (AUG): : 244 - 247
  • [5] Burzo E., 2005, MELILITES RELATED SI, V3, p27i2
  • [6] Grimvall G., 1986, THERMOPHYSICAL PROPE, V13, P65
  • [7] Three-dimensional visualization in powder diffraction
    Izumi, Fujio
    Momma, Koichi
    [J]. APPLIED CRYSTALLOGRAPHY XX, 2007, 130 : 15 - 20
  • [8] SPIN-WAVE CONTRIBUTION TO SPECIFIC HEAT OF NIF2
    JOSHUA, SJ
    CRACKNELL, AP
    [J]. PHYSICS LETTERS A, 1969, A 28 (08) : 562 - +
  • [9] Tetragonal Ba2MgGe2O7 - a novel multifunctional optical crystal with numerous manifestations of nonlinear-laser effects: almost sesqui-octave Stokes and anti-Stokes combs and cascaded χ(3) ⇆ χ(2) lasing with involved second and third harmonic generation
    Kaminskii, A. A.
    Bohaty, L.
    Becker, P.
    Liebertz, J.
    Held, P.
    Eichler, H. J.
    Rhee, H.
    Hanuza, J.
    [J]. LASER PHYSICS LETTERS, 2008, 5 (12) : 845 - 868
  • [10] THE STRUCTURAL-PROPERTIES OF SYNTHETIC SR-AKERMANITE, SR2MGSI2O7
    KIMATA, M
    [J]. ZEITSCHRIFT FUR KRISTALLOGRAPHIE, 1983, 163 (3-4): : 295 - 304
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