Magnetic properties of doped LaMnO3 ceramics obtained by a polymerizable complex method

被引：20
作者：
Brankovic, Z. [1 ]
Duris, K. [1 ]
Radojkovic, A. [1 ]
Bernik, S. [2 ]
Jaglicic, Z. [3 ]
Jagodic, M. [3 ]
Vojisavljevic, K. [1 ]
Brankovic, G. [1 ]
机构：
[1] Inst Multidisciplinary Res, Belgrade 11030, Serbia
[2] Jozef Stefan Inst, Ljubljana 1000, Slovenia
[3] Inst Math Phys & Mech, Ljubljana 1000, Slovenia
来源：
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY | 2010年 / 55卷 / 03期
关键词：
Lantanum manganite; Sintering; Oxygen atmosphere; Magnetic properties; TRANSPORT-PROPERTIES; MANGANATE PEROVSKITES; LANTHANUM MANGANITE; TEMPERATURE; SR; POWDERS; LAMNO3+/-DELTA; NANOPOWDERS; COMBUSTION; OXIDATION;
D O I：
10.1007/s10971-010-2251-4
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Substituted lanthanum manganites with the general formula A(1-x) B (x) MnO3 (A = La, B = Ca, SraEuro broken vertical bar) have attracted a lot of attention due to their exceptional electric and magnetic properties. In this work, pure and Ca2+, Sr2+-doped LaMnO3 (LMO) with the concentrations of dopants 30% Ca2+ (LCMO), 30% Sr2+ (LSMO) and 15% Ca2+ + 15% Sr2+ (LCSMO) (in mol. %) were synthesized by polymerizable complex method. Bulk samples were prepared by sintering at 1300 A degrees C for 4 h in oxygen atmosphere. It was found that sintering in oxygen atmosphere enables preparation of single phase ceramics with rhombohedral crystal structure. Chemically prepared fine, submicronic precursor powders provided uniform microstructure and grain size distribution in final ceramics. As a result, pure and doped LMO ceramics with excellent microstructural and magnetic properties were obtained. Depending on the composition, magnetic measurements showed high saturation magnetizations (up to 93 emu/g), with values of the Curie temperature in the range 180-390 K and magnetoresistance up to 67%.
引用
收藏
页码：311 / 316
页数：6
相关论文
共 35 条
  • [1] Preparation of nanosized perovskite-type LaMnO3 powders using the thermal decomposition of a heteronuclear complex, LaMn(dhbaen)(OH)(NO3)(H2O)4
    Aono, H
    Tsuzaki, M
    Kawaura, A
    Sakamoto, M
    Traversa, E
    Sadaoka, Y
    [J]. JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 2001, 84 (05) : 969 - 975
  • [2] Oxygen tracer diffusion in undoped lanthanum manganites
    Berenov, AV
    MacManus-Driscoll, JL
    Kilner, JA
    [J]. SOLID STATE IONICS, 1999, 122 (1-4) : 41 - 49
  • [3] Hydrothermal synthesis of LaMnO3+δ:: FTIR and WAXS investigations of the evolution from amorphous to crystallized powder
    Bernard, C
    Durand, B
    Verelst, M
    Lecante, P
    [J]. JOURNAL OF MATERIALS SCIENCE, 2004, 39 (08) : 2821 - 2826
  • [4] Magnetic properties of pure and Ca and Sr doped LaMnO3 prepared by polymerisable complex method
    Brankovic, G.
    Duris, K.
    Jaglicic, Z.
    Jagodic, M.
    Brankovic, Z.
    [J]. ADVANCES IN APPLIED CERAMICS, 2009, 108 (05) : 267 - 272
  • [5] Effect of preparation method on activity and stability of LaMnO3 and LaCoO3 catalysts for the flameless combustion of methane
    Campagnoli, E
    Tavares, A
    Fabbrini, L
    Rossetti, I
    Dubitsky, YA
    Zaopo, A
    Forni, L
    [J]. APPLIED CATALYSIS B-ENVIRONMENTAL, 2005, 55 (02) : 133 - 139
  • [6] Magnetic and transport properties of La0.7-xPrxPb0.3MnO3
    Chen, HZ
    Young, SL
    Chen, YC
    Horng, L
    Shi, JB
    [J]. PHYSICA B-CONDENSED MATTER, 2003, 329 : 729 - 730
  • [7] Synthesis and characterisation of La1-xMnO3±δ nanopowders prepared by acrylamide polymerisation
    Dezanneau, G
    Sin, A
    Roussel, H
    Vincent, H
    Audier, M
    [J]. SOLID STATE COMMUNICATIONS, 2002, 121 (2-3) : 133 - 137
  • [8] Influence of the annealing temperature on the physical properties of the vacancy manganites Ln1-x□xMnO3
    Dhahri, R
    Halouni, F
    [J]. JOURNAL OF ALLOYS AND COMPOUNDS, 2004, 381 (1-2) : 21 - 25
  • [9] Transport properties and magnetic behavior in the polycrystalline lanthanum-deficient manganate perovskites (approximate to La1-xMnO3)
    Ferris, V
    Goglio, G
    Brohan, L
    Joubert, O
    Molinie, P
    Ganne, M
    Dordor, P
    [J]. MATERIALS RESEARCH BULLETIN, 1997, 32 (06) : 763 - 777
  • [10] La1-xMn1-yO3-z perovskites modelled with and without antisite defects using the CALPHAD approach
    Grundy, AN
    Hallstedt, B
    Gauckler, LJ
    [J]. SOLID STATE IONICS, 2004, 173 (1-4) : 17 - 21
1234