Microstructure of single-phase cobalt and manganese oxide spinel Mn3-xCoxO4 ceramics

被引：28

作者：

El Horr, N. ^{[1
]}

Guillemet-Fritsch, S. ^{[1
]}

Rousset, A. ^{[1
]}

Bordeneuve, H. ^{[1
]}

Tenailleau, C. ^{[1
]}

机构：

[1] Univ Toulouse 3, Inst Carnot CIRIMAT, UMR CNRS 5085, F-31062 Toulouse 9, France

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2014年 / 34卷 / 02期

关键词：

Cobalt manganite; Sintering; Microstructure; Twins; Electron microscopy; ELECTRICAL-PROPERTIES; GRAIN-SIZE; CRYSTAL DISTORTION; NTC THERMISTORS; NEEDLE TWINS; NI; TRANSITION; CO; FABRICATION; STABILITY;

D O I：

10.1016/j.jeurceramsoc.2013.08.010

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：

This paper reports microstructural studies of single-phase Mn3-xCoxO4 (0.98 <= x <= 2.93) spinel ceramics using transmission electron microscopy (TEM) and energy dispersive X-ray spectroscopy (EDX). These ceramics were obtained by conventional sintering or by spark plasma sintering (SPS) of powders prepared by thermal decomposition of coprecipitated oxalate precursors. For x < 1.78 or x >= 1.78, the monophasic ceramics correspond respectively to quadratic (Q) or cubic (C) spinel structure. The ferroelastic character of the structural phase transition from C to Q is highlighted by specific microstructural features. The effect of chemical composition and heat treatment conditions on the microstructure and essentially on the presence and the characteristics of twins were investigated. The coherent twin interfaces are parallel to (112) planes in the Q cell. Twins can correspond to: tweeds, single lamellae (widths: 5-306 nm) arranged parallel to each other, large lamellae (widths: 69-928 nm) internally twinned and sometimes arranged in cyclic forms (triangular shapes). (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：317 / 326

页数：10

共 73 条

[1]

Abramoff M.D., 2004, Biophotonics International, V11, P36

[2] POSSIBLE SPECIES OF FERROMAGNETIC, FERROELECTRIC, AND FERROELASTIC CRYSTALS [J].

AIZU, K .

PHYSICAL REVIEW B, 1970, 2 (03) :754-&

[3] Segmented thermistors printed by NTC nanometric paste and applied in volume air-flow sensors [J].

Aleksic, O. S. ;

Savic, S. M. ;

Lukovic, M. D. ;

Radulovic, K. T. ;

Lukic, L. S. .

RECENT DEVELOPMENTS IN ADVANCED MATERIALS AND PROCESSES, 2006, 518 :247-252

[4]

Aleksic OS, 1999, ADVANCED SCIENCE AND TECHNOLOGY OF SINTERING, P425

[5]

AUKRUST E, 1964, T METALL SOC AIME, V230, P378

[6]

Battault T, 1997, J PHYS III, V7, P979, DOI 10.1051/jp3:1997169

[7] Microstructure, crystal structure and electrical properties of Cu0.1Ni0.8Co0.2Mn1.9O4 ceramics obtained at different sintering conditions [J].

Bodak, O ;

Akselrud, L ;

Demchenko, P ;

Kotur, B ;

Mrooz, O ;

Hadzaman, I ;

Shpotyuk, O ;

Aldinger, F ;

Seifert, H ;

Volkov, S ;

Pekhnyo, V .

JOURNAL OF ALLOYS AND COMPOUNDS, 2002, 347 (1-2) :14-23

[8] Cation distribution in manganese cobaltite spinels Co3-x Mn x O4 (0 aparts per thousandcurrency sign x aparts per thousandcurrency sign 1) determined by thermal analysis [J].

Bordeneuve, H. ;

Rousset, A. ;

Tenailleau, C. ;

Guillemet-Fritsch, S. .

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY, 2010, 101 (01) :137-142

[9] Structural variations and cation distributions in Mn3-xCoxO4 (0 ≤ x ≤ 3) dense ceramics using neutron diffraction data [J].

Bordeneuve, H. ;

Tenailleau, C. ;

Guillemet-Fritsch, S. ;

Smith, R. ;

Suard, E. ;

Rousset, A. .

SOLID STATE SCIENCES, 2010, 12 (03) :379-386

[10]

Bordeneuve H, 2009, THESIS U TOULOUSE

← 1 2 3 4 5 6 7 8 →