Doped Pr0.7-xBixSr0.3MnO3 manganite: A structural, electrical and magnetic effect

被引：15

作者：

Kumar, Neeraj ^{[1
,2
]}

Kishan, H. ^{[1
]}

Rao, A. ^{[2
]}

Awana, V. P. S. ^{[1
]}

机构：

[1] Natl Phys Lab, CSIR, Superconduct & Cryogen Div, New Delhi 110012, India

[2] Manipal Inst Technol, Dept Phys, Manipal 576104, Karnataka, India

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2010年 / 504卷 / 02期

关键词：

Manganites; Metal-insulator transition; Charge order; CURIE-TEMPERATURE; CONDUCTION; CA; SR;

D O I：

10.1016/j.jallcom.2010.06.011

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Structural, electrical and magnetic properties of Pr0.7-xBixSr0.3MnO3 (x = 0.00, 0.15, 0.25) compound have been studied. A decrease in unit cell volume is observed, although Bi3+ (1.17 angstrom) ion has larger ionic radii than Pr3+ (1.126 angstrom) ion and can be understood in a scenario of coexistence of charge ordered and ferromagnetic phase. "Electrical-resistivity and Magnetic" measurements show that the transition temperature (T-MI, T-C) increases i.e. "284.6 K, 276.5 K" to "294.04 K, similar to 300 K" for Pr0.70Sr0.3MnO3 and Pr0.45Bi0.25Sr0.3MnO3 compounds, respectively. Larger ionic size of Bi3+ ion encourages double-exchange (DE) interaction, which in turns result an increase in transition temperatures. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：L39 / L41

页数：3

共 21 条

[1]

Boujelben W, 2000, PHYS STATUS SOLIDI A, V177, P503, DOI 10.1002/(SICI)1521-396X(200002)177:2<503::AID-PSSA503>3.0.CO

[2]

2-6

[3] Structural and magnetic phase diagrams of La1-xSrxMnO3 and Pr1-ySryMnO3 -: art. no. 094431 [J].

Chmaissem, O ;

Dabrowski, B ;

Kolesnik, S ;

Mais, J ;

Jorgensen, JD ;

Short, S .

PHYSICAL REVIEW B, 2003, 67 (09)

[4] A phenomenological description of the pressure sensitivity of the Curie temperature in hole-doped manganites [J].

Garbarino, G. ;

Acha, C. .

EPL, 2009, 88 (04)

[5] Structural and magnetic properties of Bi doped in the A site of (Pr1-xBix)0.6Sr0.4MnO3 (0≤x≤0.4) perovskite manganites [J].

Kammoun, Imed ;

Cheikhrouhou-Koubaa, Wissem ;

Boujelben, Wahiba ;

Cheikhrouhou, Abdelwaheb .

JOURNAL OF MATERIALS SCIENCE, 2008, 43 (03) :960-966

[6] Magnetic transport behavior of nano-crystalline Pr0.67A0.33MnO3 (A = Ca, Sr, Pb and Ba) manganites [J].

Krishna, D. C. ;

Reddy, P. Venugopal .

JOURNAL OF ALLOYS AND COMPOUNDS, 2009, 479 (1-2) :661-669

[7] Structural, electrical, magnetic, and thermal studies of Cr-doped La0.7Ca0.3Mn1-xCrxO3 (0 ≤ x ≤ 1) manganites [J].

Kumar, Neeraj ;

Kishan, H. ;

Rao, Ashok ;

Awana, V. P. S. .

JOURNAL OF APPLIED PHYSICS, 2010, 107 (08)

[8] Effect of Pr doping in La-Sn-Mn-O system [J].

Kumar, Neeraj ;

Tripathi, Rahul ;

Dogra, Anjana ;

Awana, V. P. S. ;

Kishan, H. .

JOURNAL OF ALLOYS AND COMPOUNDS, 2010, 492 (1-2) :L28-L32

[9] Electrical behavior of some silver-doped lanthanum-based CMR materials [J].

Lakshmi, Y. Kalyana ;

Reddy, P. Venugopal .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2009, 321 (09) :1240-1245

[10] Magnetic polaron conduction above the Curie temperature in Fe-doped Pr0.75Sr0.25MnO3 [J].

Liu, JM ;

Yu, T ;

Huang, Q ;

Li, J ;

Shen, ZX ;

Ong, CK .

JOURNAL OF PHYSICS-CONDENSED MATTER, 2002, 14 (06) :L141-L147

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