Magnetic and transport properties of pyrochlore-type R2Mo2O7 (R = Sm, Gd and Tb) single crystals

被引：9

作者：

Miyoshi, K ^{[1
]}

Honda, K ^{[1
]}

Yamashita, T ^{[1
]}

Fujiwara, K ^{[1
]}

Takeuchi, J ^{[1
]}

机构：

[1] Shimane Univ, Dept Mat Sci, Interdisciplinary Fac Sci & Engn, Matsue, Shimane 6908504, Japan

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2001年 / 226卷

关键词：

phase transitions; metal-insulator; pyrochlore; frustration; spin-glass;

D O I：

10.1016/S0304-8853(00)00645-4

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Magnetic and transport properties of R2Mo2O7 (R = Sm, Gd and Tb) pyrochlores have been investigated using single crystal specimens grown by floating zone method. The system is found to undergo a transition from ferromagnetic metal (R = Sm and Gd) to spin-glass-like insulator (R Tb) depending on the R-ion radius. Resistivity data Of Sm2Mo2O7 under a pressure of 0.6 GPa are also presented. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：898 / 899

页数：2

共 7 条

[1] MAGNETIC AND ELECTRICAL-PROPERTIES OF R2MO2O7 PYROCHLORE COMPOUNDS [J].

ALI, N ;

HILL, MP ;

LABROO, S ;

GREEDAN, JE .

JOURNAL OF SOLID STATE CHEMISTRY, 1989, 83 (01) :178-187

[2] Glassy statics and dynamics in the chemically ordered pyrochlore anti-ferromagnet Y2Mo2O7 [J].

Gardner, JS ;

Gaulin, BD ;

Lee, SH ;

Broholm, C ;

Raju, NP ;

Greedan, JE .

PHYSICAL REVIEW LETTERS, 1999, 83 (01) :211-214

[3] Static critical behavior of the spin-freezing transition in the geometrically frustrated pyrochlore antiferromagnet Y2Mo2O7 [J].

Gingras, MJP ;

Stager, CV ;

Raju, NP ;

Gaulin, BD ;

Greedan, JE .

PHYSICAL REVIEW LETTERS, 1997, 78 (05) :947-950

[4] Anomalous magnetotransport properties of R2Mo2O7 near the magnetic phase boundary [J].

Katsufuji, T ;

Hwang, HY ;

Cheong, SW .

PHYSICAL REVIEW LETTERS, 2000, 84 (09) :1998-2001

[5] Magnetic ordering of pyrochlore oxides R2Mo2O7 (R = Er-Nd, Y) by AC and DC magnetic measurements [J].

Miyoshi, K ;

Nishimura, Y ;

Honda, K ;

Fujiwara, K ;

Takeuchi, J .

PHYSICA B, 2000, 284 :1463-1464

[6] ELECTRICAL-PROPERTIES OF LN2MO2O7 PYROCHLORES (LN=SM-YB,Y) [J].

SUBRAMANIAN, MA ;

ARAVAMUDAN, G ;

RAO, GVS .

MATERIALS RESEARCH BULLETIN, 1980, 15 (10) :1401-1408

[7] Magnetotransport phenomena in a metallic ferromagnet on the verge of Mott transition:: Sm2Mo2O7 [J].

Taguchi, Y ;

Tokura, Y .

PHYSICAL REVIEW B, 1999, 60 (14) :10280-10283

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