Induced ferromagnetism and colossal magnetoresistance by Ir-doping in Pr1-xCaxMnO3

被引：15

作者：

Hébert, S ^{[1
]}

Maignan, A ^{[1
]}

Frésard, R ^{[1
]}

Hervieu, M ^{[1
]}

Retoux, R ^{[1
]}

Martin, C ^{[1
]}

Raveau, B ^{[1
]}

机构：

[1] ISMRA Univ Caen, UMR 6508 Associee CNRS, Lab CRISMAT, F-14050 Caen, France

来源：

EUROPEAN PHYSICAL JOURNAL B | 2001年 / 24卷 / 01期

关键词：

D O I：

10.1007/s100510170025

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The doping of the manganese site by iridium (up to 15%) in the small A cation manganites Pr1-xCaxMnO3 (0.4 less than or equal to x less than or equal to 0.8), has been investigated as a new method to suppress charge-ordering and induce CMR effects. Ir doping leads to ferromagnetism and to insulator to metal transitions, with high transition temperatures reaching 180 K and CMR ratio in 7 T as large as 10(4). The efficiency with which iridium induces ferromagnetism and CMR is compared to previous results obtained with other substitutions (Ru, Rh, Ni, Cr...). The ionic radius of the foreign cations and their mixed-valencies are found to be the main parameters governing the ability to collapse the charge-ordered state.

引用

页码：85 / 89

页数：5

共 23 条

[1] Modulated charge ordering process in Sm0.5Ca0.5Mn1-xCrxO3 manganites [J].

Barnabe, A ;

Hervieu, M ;

Martin, C ;

Maignan, A ;

Raveau, B .

JOURNAL OF MATERIALS CHEMISTRY, 1998, 8 (06) :1405-1411

[2] Extension of colossal magnetoresistance properties to small A site cations by chromium doping in Ln0.5Ca0.5MnO3 manganites [J].

Barnabe, A ;

Maignan, A ;

Hervieu, M ;

Damay, F ;

Martin, C ;

Raveau, B .

APPLIED PHYSICS LETTERS, 1997, 71 (26) :3907-3909

[3] Modulated structure of Ba6ZnIr4O15; A comparison with Ba6CuIr4O15 and SrMn1-xCoxO3-y [J].

Battle, PD ;

Blake, GR ;

Darriet, J ;

Gore, JG ;

Weill, F .

JOURNAL OF MATERIALS CHEMISTRY, 1997, 7 (08) :1559-1564

[4] Charge ordering and structural transitions in Pr0.5Sr0.41Ca0.09MnO3 [J].

Damay, F ;

Jirak, Z ;

Hervieu, M ;

Martin, C ;

Maignan, A ;

Raveau, B ;

Andre, G ;

Bouree, F .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1998, 190 (03) :221-232

[5]

Goodenough J. B., 1963, MAGNETISM CHEM BOND

[6]

Hervieu M, 1999, EUR PHYS J B, V8, P31, DOI 10.1007/s100510050665

[7] Magnetism and charge ordering in Pr0.5CaxSr0.5-xMnO3 (x=0.09 and 0.5) [J].

Jirák, Z ;

Damay, F ;

Hervieu, M ;

Martin, C ;

Raveau, B ;

André, G ;

Bourée, F .

PHYSICAL REVIEW B, 2000, 61 (02) :1181-1188

[8] NEUTRON-DIFFRACTION STUDY OF PR1-XCAXMNO3 PEROVSKITES [J].

JIRAK, Z ;

KRUPICKA, S ;

SIMSA, Z ;

DLOUHA, M ;

VRATISLAV, S .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1985, 53 (1-2) :153-166

[9] IRIDIUM(III) STABILIZED IN OXYGEN LATTICES WITH THE PEROVSKITE STRUCTURE SR(2)MIR(III)O(6) (M=NB, TA) [J].

JUNG, DY ;

DEMAZEAU, G ;

CHOY, JH .

JOURNAL OF MATERIALS CHEMISTRY, 1995, 5 (03) :517-519

[10] Diffuse phase transition and phase separation in Cr-doped Nd1/2Ca1/2MnO3:: A relaxor ferromagnet [J].

Kimura, T ;

Tomioka, Y ;

Kumai, R ;

Okimoto, Y ;

Tokura, Y .

PHYSICAL REVIEW LETTERS, 1999, 83 (19) :3940-3943

← 1 2 3 →