The effect of SiO2 addition on the development of low-Σ grain boundaries in PTC thermistors

Journal of the European Ceramic Society

Volumn 30, Issue 1, 2010, Pages 107-112

  Zubair, M A ^a   Leach, C ^a  

^a UNIVERSITY OF MANCHESTER   (United Kingdom)

Author keywords

Coincidence lattice; Electroceramic; Electron backscattering patterns (EBSP); Grain boundary structure; Positive temperature coefficient (PTC)

Indexed keywords

COINCIDENCE LATTICE; ELECTROCERAMIC; ELECTRON BACKSCATTERING PATTERNS (EBSP); GRAIN BOUNDARY STRUCTURE; POSITIVE TEMPERATURE COEFFICIENT (PTC);

BACKSCATTERING; CERAMIC MATERIALS; COOLING SYSTEMS; CRYSTAL LATTICES; ELECTRON SCATTERING; GRAIN SIZE AND SHAPE; PLATINUM COMPOUNDS; POSITIVE TEMPERATURE COEFFICIENT; SILICON COMPOUNDS; THERMISTORS;

GRAIN BOUNDARIES;

EID: 70349767911     PISSN: 09552219     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.jeurceramsoc.2009.07.026     Document Type: Article

References (31)

1. Heywang W. Resistivity anomaly in doped barium titanate. J. Am. Ceram. Soc. 47 (1964) 484-490
2. Goodman G. Electrical conduction anomaly in samarium doped barium titanate. J. Am. Ceram. Soc. 46 (1963) 48-54
3. Jonker G.H. Some aspects of semiconducting barium titanate. Solid State Electron. 7 (1964) 895-903
4. Jonker G.H. Equilibrium barriers in PTC thermistors. In: Levinson L.M. (Ed). Adv. In Ceramics 1, Grain Boundary Phenomena in Electronic Ceramics (1981), Am. Ceram. Soc. 155-166
5. 3 ceramics. Solid State Electron. 16 (1973) 617-622
6. Nemoto H., and Oda I. Direct examinations of PTC action of single grain. J. Am. Ceram. Soc. 63 (1980) 398-401
7. Kuwabara M., Morimo K., and Matsunaga T. Single-grain boundaries in PTC resistors. J. Am. Ceram. Soc. 79 (1996) 997-1001
8. 3 based thermistor. J. Mater. Sci. 32 (1997) 4641-4643
9. Russell J.D., Leach C., and Freer R. Grain boundary structures in electronic ceramics. Key Eng. Mater. 132-136 (1997) 1155-1158
10. Desu S.B., and Payne D.A. Interfacial segregation in Perovskites: IV, Internal boundary layer devices. J. Am. Ceram. Soc. 73 (1990) 3416-3421
11. Blamey J.M., and Parry T.V. The effect of processing variables on the mechanical and electrical properties of barium titanate PTCR ceramics (Part 1). J. Mater. Sci. 28 (1993) 4311-4316
12. Randle V. The Measurement Of Grain Boundary Geometry (1993), IOP publishing, Bristol, UK
13. 3. J. Mater. Sci. 14 (1995) 537-538 (letters)
14. Hayashi K., Yamamoto T., and Sakuma T. Grain orientation dependence of the PTCR effect in niobium-doped barium titanate. J. Am. Ceram. Soc. 79 (1996) 1669-1672
15. Hayashi K., Yamamoto T., Ikuhara Y., and Sakuma T. Grain boundary electrical barriers in PTC thermistors. J. Appl. Phys. 86 (1999) 2909-2913
16. Hayashi K., Yamamoto T., Ikuhara Y., and Sakuma T. Formation of potential barrier related to grain boundary character in semiconducting barium titanate. J. Am. Ceram. Soc. 83 (2000) 2684-2688
17. Ernst F., Mulvihill M.L., Kienzle O., and Ruhle M. Preferred grain orientation relationships in sintered perovskite ceramics. J. Am. Ceram. Soc. 84 (2001) 1885-1890
18. Seaton J., and Leach C. Formation and retention of low-Σ interfaces in PTC thermistors. Acta Mater. 53 (2005) 2751-2758
19. 3: structural aspects and grain boundary potentials. J. Electroceram. 10 (2003) 117-135
20. 2 additions and cooling rate on the electrical behavior of donor-acceptor co-doped positive temperature coefficient thermistors. J. Appl. Phys. 103 (2008) article 123713
21. Channel 5 diffraction pattern analysis software, HKL, Denmark.
22. Humphreys F.J. Vmap 8.5, School of Materials (2001), University of Manchester, Manchester, UK
23. 3 ceramics. J. Appl. Phys. 66 (1989) 1382-1387
24. Choi S.Y., Yoon D.Y., and Kang S.J.L. Kinetic formation and thickening of intergranular amorphous films at grain boundaries in barium titanate. Acta Mater. 52 (2004) 3721-3726
25. Saylor D.M., El-Dasher B.S., Adams B.L., and Rohrer G.S. Measuring the five-parameter grain boundary distribution from observations of planar sections. Metall. Mater. Trans. A: Phys. Metall. Mater. Sci. 35A (2004) 1981-1989
26. Saylor D.M., Moraweic A., and Rohrer G.S. The relative free energies of grain boundaries as a function of five macroscopic parameters. Acta Mater. 51 (2003) 3675-3686
27. Kim C.S., Hu Y., Rohrer G.S., and Randle V. Five-parameter grain boundary distribution in grain boundary engineered brass. Scripta Mater. 52 (2005) 633-637
28. Saylor D.M., Moraweic A., and Rohrer G.S. Distribution and energies of grain boundaries in magnesia as a function of five degrees of freedom. J Am. Ceram. Soc. 85 (2002) 3081-3083
29. Krasevec V., Drofenik M., and Kolar D. Genesis of the (1 1 1) twin in barium titanate. J. Am. Ceram. Soc. 73 (1990) 856-860
30. Clarke D.R. Intergranular phases in polycrystalline ceramics. In: Dufour, Monty, and Petot-Ervas (Eds). Surfaces an Interfaces of Ceramic Materials, NATO ASI series vol 173 (1988), Kluwer academic publishers 57-79
31. Dillon S.J., and Harmer M.P. Demystifying the role of sintering additives with 'complexation'. J. Eur. Ceram. Soc. 28 (2008) 1485-1493