Structure refinement of mixed oxides FexCo1-xTa2O6

被引：16

作者：

Antonietti, V ^{[1
]}

Kinast, EJ ^{[1
]}

Zawislak, LI ^{[1
]}

da Cunha, JBM ^{[1
]}

dos Santos, CA ^{[1
]}

机构：

[1] Univ Fed Rio Grande do Sul, Inst Fis, BR-91501970 Porto Alegre, RS, Brazil

来源：

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 2001年 / 62卷 / 07期

关键词：

oxides; chemical synthesis; X-ray diffraction; crystal structure;

D O I：

10.1016/S0022-3697(01)00014-2

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We report X-ray powder diffraction measurements performed on synthetic samples of the tapiolite-like FexCo1-xTa2O6 solid solution. The crystal structure has been refined by the Rietveld method, by using the program FULLPROF. All the samples are tetragonal and were indexed to the space group P4(2)/mnm. The end-members (FeTa2O6 and CoTa2O6) have unit-cell parameters quite similar to those previously published. The unit-cell parameters a and c for the mixed samples vary linearly with the cation substitution (Co --> Fe) according to the Vegard's law in all the range of substitution. (C) 2001 Elsevier Science Ltd. All rights reserved.

引用

页码：1239 / 1242

页数：4

共 18 条

[1] TETRACRITICAL POINTS IN MIXED MAGNETIC CRYSTALS [J].

AHARONY, A .

PHYSICAL REVIEW LETTERS, 1975, 34 (10) :590-593

[2] DECOUPLED TETRACRITICAL POINTS IN QUENCHED RANDOM ALLOYS WITH COMPETING ANISOTROPIES [J].

AHARONY, A ;

FISHMAN, S .

PHYSICAL REVIEW LETTERS, 1976, 37 (23) :1587-1590

[3] THE MAGNETIC-PROPERTIES OF FETA2O6 - MAGNETIC-STRUCTURE AND LOW-DIMENSIONAL BEHAVIOR [J].

EICHER, SM ;

GREEDAN, JE ;

LUSHINGTON, KJ .

JOURNAL OF SOLID STATE CHEMISTRY, 1986, 62 (02) :220-230

[4] SPIN FLOP, SUPERSOLIDS, AND BICRITICAL AND TETRACRITICAL POINTS [J].

FISHER, ME ;

NELSON, DR .

PHYSICAL REVIEW LETTERS, 1974, 32 (24) :1350-1353

[5] MICROSCOPIC EVIDENCE FOR A NEW TYPE OF ORDERING OF SPIN COMPONENTS IN A RANDOM MIXTURE WITH COMPETING MAGNETIC ANISOTROPIES [J].

ITO, A ;

SOMEYA, Y ;

KATSUMATA, K .

SOLID STATE COMMUNICATIONS, 1980, 36 (08) :681-686

[6] NEUTRON-SCATTERING STUDY OF 2-DIMENSIONAL RANDOMLY MIXED MAGNETS WITH COMPETING ANISOTROPIES K2CU1-XCOXF4 [J].

KADOWAKI, H ;

YOSHIZAWA, H ;

ITOH, M ;

YAMADA, I .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1990, 59 (02) :713-717

[7] EXPERIMENTAL PHASE-DIAGRAM OF A RANDOM MIXTURE OF 2 ANISOTROPIC ANTI-FERROMAGNETS [J].

KATSUMATA, K ;

KOBAYASHI, M ;

SATO, T ;

MIYAKO, Y .

PHYSICAL REVIEW B, 1979, 19 (05) :2700-2703

[8] MAGNETIC-ORDERING IN COTA2O6 AND NITA2O6 [J].

KREMER, RK ;

GREEDAN, JE .

JOURNAL OF SOLID STATE CHEMISTRY, 1988, 73 (02) :579-582

[9] Structure and magnetic properties of layered (FexCo1-x)Ta2O6 compounds [J].

Mello, VD ;

Zawislak, LI ;

da Cunha, JBM ;

Kinast, EJ ;

Soares, JB ;

dos Santos, CA .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1999, 196 :846-847

[10] SUSCEPTIBILITY ANALYSIS OF TWO-DIMENSIONAL ANTIFERROMAGNET FETA2O6 [J].

MURAOKA, Y ;

IDOGAKI, T ;

URYU, N .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1988, 57 (05) :1758-1761

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