Effects of sintering on the structural, micro structural and magnetic properties of nanoparticle manganite Ca1-xGdxMnO3 (x=0.05, 0.1, 0.15, 0.2)

被引：15

作者：

Rosic, Milena ^{[1
]}

Kljaljevic, Ljiljana ^{[1
]}

Jordanov, Dragana ^{[1
]}

Stoiljkovic, Milovan ^{[2
]}

Kusigerski, Vladan ^{[3
]}

Spasojevic, Vojislav ^{[3
]}

Matovic, Branko ^{[1
]}

机构：

[1] Univ Belgrade, Vinca, Inst Nucl Sci, Mat Sci Lab, Belgrade 11001, Serbia

[2] Univ Belgrade, Vinca, Inst Nucl Sci, Dept Phys Chem, Belgrade 11001, Serbia

[3] Univ Belgrade, Vinca, Inst Nucl Sci, Lab Theoret & Condensed Matter Phys, Belgrade 11001, Serbia

来源：

CERAMICS INTERNATIONAL | 2015年 / 41卷 / 10期

关键词：

Sintering; X-ray methods; Magnetic properties; Perovskites; RARE-EARTH MANGANATES; PHASE-SEPARATION; TEMPERATURE; MAGNETORESISTANCE;

D O I：

10.1016/j.ceramint.2015.08.041

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：

Nanocrystalline manganites Ca1-xGdxMnO3 (x=0.05, 0.1, 0.15, and 0.2) were synthesized by a modified glycine-nitrate procedure and subjected to a systematic investigation regarding the effects of calcination and sintering on their structural, microstructural and magnetic properties. Thermal treatments of the green bodies were carried out by the conventional sintering (CS) method and the effects were monitored by different experimental techniques (XRD, ICP, FTIR, SEM, and EDS). The obtained results showed that induced structural/microstructural changes were not simple functions of the dopant concentration x and that they were influenced by different material-specific processes. Magnetism of the final bulk powders have been investigated by SQUID-magnetometry and correlated with samples composition and structural/microstructural properties. (C) 2015 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

引用

页码：14964 / 14972

页数：9

共 28 条

[1] High temperature susceptibility in electron doped Ca1-xYxMnO3:: double exchange versus superexchange
Aliaga, H
Causa, MT
Tovar, M
Butera, A
Alascio, B
Vega, D
Leyva, G
Polla, G
König, P
[J]. JOURNAL OF PHYSICS-CONDENSED MATTER, 2003, 15 (02) : 249 - 258
[2] Thermoelectric Properties of Ca1-xGdxMnO3-δ (0.00, 0.02, and 0.05) Systems
Bhaskar, Ankam
Liu, Chia-Jyi
Yuan, J. J.
[J]. SCIENTIFIC WORLD JOURNAL, 2012,
[3] Chen WF, 2006, J RARE EARTH, V24, P782
[4] Mixed-valence manganites
Coey, JMD
Viret, M
von Molnár, S
[J]. ADVANCES IN PHYSICS, 1999, 48 (02) : 167 - 293
[5] Nanoscale phase separation in colossal magnetoresistance materials: lessons for the cuprates?
Dagotto, E
Burgy, J
Moreo, A
[J]. SOLID STATE COMMUNICATIONS, 2003, 126 (1-2) : 9 - 22
[6] Infrared absorption of lanthanum manganites
Gao, F
Lewis, RA
Wang, XL
Dou, SX
[J]. PHYSICA C, 2000, 341 : 2235 - 2236
[7] VARIATION IN LOCAL PACKING DENSITY NEAR WALL OF A RANDOMLY PACKED-BED OF EQUAL SPHERES
GOTOH, K
JODREY, WS
TORY, EM
[J]. POWDER TECHNOLOGY, 1978, 20 (02) : 257 - 260
[8] Chemical pressure effect on magnetic properties in electron-doped perovskite manganites (Gd0.08CaySr0.92-y)MnO3 (0 < y < 1):: Percolation transition of ferromagnetic clusters -: art. no. 094419
Hirano, S
Sugiyama, J
Noritake, T
Tani, T
[J]. PHYSICAL REVIEW B, 2004, 70 (09) : 094419 - 1
[9] Nanostructured advanced materials. Perspectives and directions
Jortner, J
Rao, CNR
[J]. PURE AND APPLIED CHEMISTRY, 2002, 74 (09) : 1491 - 1506
[10] POWDER CELL - A program for the representation and manipulation of crystal structures and calculation of the resulting X-ray powder patterns
Kraus, W
Nolze, G
[J]. JOURNAL OF APPLIED CRYSTALLOGRAPHY, 1996, 29 : 301 - 303

← 1 2 3 →