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

被引：38

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.

引用

页码：10809 / 10814

页数：6

共 22 条

[1] Magnetic and dielectric properties of A2CoSi2O7 (A=Ca, Sr, Ba) crystals [J].

Akaki, M. ;

Tozawa, J. ;

Akahoshi, D. ;

Kuwahara, H. .

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 [J].

BRESE, NE ;

OKEEFFE, M .

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 [J].

BROWN, ID ;

ALTERMATT, D .

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 [J].

Izumi, Fujio ;

Momma, Koichi .

APPLIED CRYSTALLOGRAPHY XX, 2007, 130 :15-20

[8] SPIN-WAVE CONTRIBUTION TO SPECIFIC HEAT OF NIF2 [J].

JOSHUA, SJ ;

CRACKNELL, AP .

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 [J].

Kaminskii, A. A. ;

Bohaty, L. ;

Becker, P. ;

Liebertz, J. ;

Held, P. ;

Eichler, H. J. ;

Rhee, H. ;

Hanuza, J. .

LASER PHYSICS LETTERS, 2008, 5 (12) :845-868

[10] THE STRUCTURAL-PROPERTIES OF SYNTHETIC SR-AKERMANITE, SR2MGSI2O7 [J].

KIMATA, M .

ZEITSCHRIFT FUR KRISTALLOGRAPHIE, 1983, 163 (3-4) :295-304

← 1 2 3 →