Effect of heterovalent substitution at Mn site on the magnetic and transport properties of La0.67Sr0.33MnO3

被引：10

作者：

Priolkar, K. R. ^{[1
]}

Rawat, R. ^{[2
]}

机构：

[1] Goa Univ, Dept Phys, Goa 403206, India

[2] UGC DAE Consort Sci Res, Indore 452017, India

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2008年 / 320卷 / 3-4期

关键词：

manganite; infrared absorption; colossal magnetoresistance; polaron; perovskite;

D O I：

10.1016/j.jmmm.2007.06.007

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Magnetic and transport properties of Ti substituted La0.67Sr0.33MnO3 are drastically affected with a change in preparation conditions. Low temperature infra-red absorption measurements reveal that this is perhaps due to inhomogeniety in substitution of Ti4+ on Mn sites. It is found that, in the high temperature annealed samples, the substitution of Ti supresses the double exchange interaction due to the formation of Mn3+-O-Ti4+ chains. While in the low temperature annealed case substitution of Ti causes formation of isolated ferromagnetic clusters linked to each other by a variable range hopping polaron. (c) 2007 Elsevier B.V. All rights reserved.

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收藏

页码：325 / 330

页数：6

相关论文

共 28 条

[1] CMR in a manganite with 50% of Ti in the Mn sites [J].

Alvarez-Serrano, I ;

López, ML ;

Pico, C ;

Veiga, ML .

SOLID STATE SCIENCES, 2006, 8 (01) :37-43

[2] Spin-glass insulator state in (Tb-La)(2/3)Ca1/3MnO3 perovskite [J].

DeTeresa, JM ;

Ibarra, MR ;

Garcia, J ;

Blasco, J ;

Ritter, C ;

Algarabel, PA ;

Marquina, C ;

delMoral, A .

PHYSICAL REVIEW LETTERS, 1996, 76 (18) :3392-3395

[3] Electronic and ionic transport properties and other physical aspects of perovskites [J].

Goodenough, JB .

REPORTS ON PROGRESS IN PHYSICS, 2004, 67 (11) :1915-1993

[4] Grain-boundary effects on the magnetoresistance properties of perovskite manganite films [J].

Gupta, A ;

Gong, GQ ;

Xiao, G ;

Duncombe, PR ;

Lecoeur, P ;

Trouilloud, P ;

Wang, YY ;

Dravid, VP ;

Sun, JZ .

PHYSICAL REVIEW B, 1996, 54 (22) :15629-15632

[5] Enhancement of room temperature magnetoresistance in Lao0.67Sr0.33Mn1-xTixO3 manganites [J].

Hu, JF ;

Qin, HW ;

Chen, J ;

Wang, ZX .

MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY, 2002, 90 (1-2) :146-148

[6] LATTICE EFFECTS ON THE MAGNETORESISTANCE IN DOPED LAMNO3 [J].

HWANG, HY ;

CHEONG, SW ;

RADAELLI, PG ;

MAREZIO, M ;

BATLOGG, B .

PHYSICAL REVIEW LETTERS, 1995, 75 (05) :914-917

[7] Spin-polarized intergrain tunneling in La-2/Sr-3(1)/3MnO3 [J].

Hwang, HY ;

Cheong, SW ;

Ong, NP ;

Batlogg, B .

PHYSICAL REVIEW LETTERS, 1996, 77 (10) :2041-2044

[8] Structure, magnetic and electrical behaviour of La0.7Sr0.3Mn1-xTixO3 with 0 ≤ x ≤ 0.3 [J].

Kallel, N ;

Dezanneau, G ;

Dhahri, J ;

Oumezzine, M ;

Vincent, H .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2003, 261 (1-2) :56-65

[9] Frequency shifts of the internal phonon modes in La0.7Ca0.3MnO3 [J].

Kim, KH ;

Gu, JY ;

Choi, HS ;

Park, GW ;

Noh, TW .

PHYSICAL REVIEW LETTERS, 1996, 77 (09) :1877-1880

[10] Structure, magnetic, and transport properties of Ti-substituted La0.7Sr0.3MnO3 -: art. no. 014433 [J].

Kim, MS ;

Yang, JB ;

Cai, Q ;

Zhou, XD ;

James, WJ ;

Yelon, WB ;

Parris, PE ;

Buddhikot, D ;

Malik, SK .

PHYSICAL REVIEW B, 2005, 71 (01)