Lattice effects on the transport properties of (R,Sr)3Mn2O7 (R = La, Eu, and Pr)

被引：39

作者：

Chatterjee, S ^{[1
]}

Chou, PH ^{[1
]}

Chang, CF ^{[1
]}

Hong, IP ^{[1
]}

Yang, HD ^{[1
]}

机构：

[1] Natl Sun Yat Sen Univ, Dept Phys, Kaohsiung 804, Taiwan

来源：

PHYSICAL REVIEW B | 2000年 / 61卷 / 09期

关键词：

D O I：

10.1103/PhysRevB.61.6106

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The resistivity, magnetoresistance, and thermoelectric power (TEP) of R-1.4(Sr1-yCay)(1.6)Mn2O7 and R(Sr1-yCay)(2)Mn2O7 (R = La, Eu, Pr) have been studied to investigate the lattice effects (when the Mn4+ concentration is 30 and 50 %) on the transport properties. The semiconducting behavior in the resistivity curve can be explained with the nearest-neighbor small polaron hopping. A changeover from the adiabatic to the nonadiabatic regime in the hopping mechanism is observed when the ratio of Mn4+/(Mn3++Mn4+) changes from 30 to 50 %. The behavior of the magnetoresistance in R-1.4(Sr1-yCay)(1.6)Mn2O7 is different from that in R(Sr1-yCay)(2)Mn2O7 which might be due to the presence of a more complex magnetic interaction dominated by superexchange in R(Sr1-yCay)(2)Mn2O7. The TEP data below the metal-insulator transition of R-1.4(Sr1-yCay)(1.6)Mn2O7 are the combinations of the phonon drag and the diffusion thermopower but in RSr2Mn2O7 some other terms may be present.

引用

页码：6106 / 6113

页数：8

共 46 条

[1] Sign reversal of the Mn-O bond compressibility in La1.2Sr1.8Mn2O7 below T-C: Exchange striction in the ferromagnetic state [J].

Argyriou, DN ;

Mitchell, JF ;

Goodenough, JB ;

Chmaissem, O ;

Short, S ;

Jorgensen, JD .

PHYSICAL REVIEW LETTERS, 1997, 78 (08) :1568-1571

[2] Lattice effects and magnetic structure in the layered colossal magnetoresistance manganite La2-2xSr1+2xMn2O7, x = 0.3 [J].

Argyriou, DN ;

Mitchell, JF ;

Radaelli, PG ;

Bordallo, HN ;

Cox, DE ;

Medarde, M ;

Jorgensen, JD .

PHYSICAL REVIEW B, 1999, 59 (13) :8695-8702

[3] Thermoelectric effect in La1-xSrxMnO3 [J].

Asamitsu, A ;

Moritomo, Y ;

Tokura, Y .

PHYSICAL REVIEW B, 1996, 53 (06) :R2952-R2955

[4] A STRUCTURAL PHASE-TRANSITION INDUCED BY AN EXTERNAL MAGNETIC-FIELD [J].

ASAMITSU, A ;

MORITOMO, Y ;

TOMIOKA, Y ;

ARIMA, T ;

TOKURA, Y .

NATURE, 1995, 373 (6513) :407-409

[5] Magnetotransport in perovskite series Lan-nxCa1+nxMnnO3n+1 ferromagnets [J].

Asano, H ;

Hayakawa, J ;

Matsui, M .

PHYSICAL REVIEW B, 1998, 57 (02) :1052-1056

[6]

Barnard R. D., 1972, THERMOELECTRICITY ME

[7] Colossal magnetoresistance in Sr2-xNd1+xMn2O7 (x=0.0,0.1) [J].

Battle, PD ;

Blundell, SJ ;

Green, MA ;

Hayes, W ;

Honold, M ;

Klehe, AK ;

Laskey, NS ;

Millburn, JE ;

Murphy, L ;

Rosseinsky, MJ ;

Samarin, NA ;

Singleton, J ;

Sluchanko, NE ;

Sullivan, SP ;

Vente, JF .

JOURNAL OF PHYSICS-CONDENSED MATTER, 1996, 8 (32) :L427-L434

[8] MAGNETORESISTANCE IN MAGNETIC MANGANESE OXIDE WITH INTRINSIC ANTIFERROMAGNETIC SPIN STRUCTURE [J].

CHAHARA, K ;

OHNO, T ;

KASAI, M ;

KOZONO, Y .

APPLIED PHYSICS LETTERS, 1993, 63 (14) :1990-1992

[9] Pressure effects on the transport and magnetic properties of La1.4Sr1.6Mn2O7 [J].

Chang, CF ;

Chou, PH ;

Tsay, HL ;

Weng, SS ;

Chatterjee, S ;

Yang, HD ;

Liu, RS ;

Shen, CH ;

Li, WH .

PHYSICAL REVIEW B, 1998, 58 (18) :12224-12229

[10] Anomalous thermoelectric power of Ag-containing (Bi,Pb)(4)Sr3Ca3Cu4Ox-type superconductors prepared by a glass-ceramic method [J].

Chatterjee, S ;

Banerjee, S ;

Chaudhuri, BK ;

Froumin, N ;

Polak, M ;

Baram, J .

PHYSICAL REVIEW B, 1996, 54 (14) :10143-10149

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