SEARCH WITHIN CONTENT
VOLUME 7 , ISSUE 5 (December 2014) > List of articles
Special issue ICST 2014
Citation Information : International Journal on Smart Sensing and Intelligent Systems. Volume 7, Issue 5, Pages 1-4, DOI: https://doi.org/10.21307/ijssis-2019-128
License : (CC BY-NC-ND 4.0)
Published Online: 15-February-2020
NTC thermistors of Y-Al-Mn-Fe-Ni-Cr-O systems were fabricated by using normal ceramic processing for wide temperature range measurement. Pt-Rh alloy as electrodes was inserted into the body during the forming process to increase the reliability of high temperature and to decrease the contact resistance. The properties were analyzed by XRD, SEM and resistance measurement. There are no distinct XRD patterns between Y0.2Al0.1Mn0.27Fe0.16Ni0.27Ox and Y0.2Al0.1Mn0.264Fe0.16 Ni0.264Cr0.012Ox because of too small content of Cr2O3, as a dopant, to make peak difference or new phases within the XRD resolution. SEM images and resistance behaviors show the different properties. With the addition of Cr2O3 as a dopant, the crystallinity and the grain size were decreased and increased, respectively. The resistance behaviors were similar but the values are low with Cr2O3. The specimens show the straight line relationship between the electrical resistivity and the temperature over a wide temperature range, indicating NTC thermistor characteristics.
 J. A. Becker, C. B. Green, G. L. Pearson, “Properties and uses of thermistors thermally sensitive resistors”, Am. Inst. Elect. Eng. Trans., Vol. 65(11), pp 711-725, 1946.
 S. A. Kanade, V. Puri, “Composition dependent resistivity of thick film Ni(1-x) CoxMn2O4: (o≤x≤1) NTC thermistors”, Materials Letters , vol. 60, pp. 1428-1431, 2006.
 D. Houivet, J. Bernard, J. M. Haussonne, “High temperature NTC ceramic resistors (ambient-1000oC)”, J. European Ceram. Soc., vol. 24, pp.12371241, 2004.
 A. Banerjee, S.A. Akbar, “A new method for fabrication of stable and reproducible yttria-based thermistors”, Sen. and Actuators, vol. 87, pp. 6066, 2000.
 G. Lavenuta, ‘Negative temperature coefficient thermistors” Sensors, vol.14, pp46-55 , 1997.
 J. G. Fagan, V. R. W. Amarkoon, “Reliability and reproducibility of ceramic sensors: Part I NTC thermistor” Am. Ceram. Soc, Bull. 72, pp7078, 1993.
 K. Park, S. J. Yun, “Effect of SiO2 addition on the electrical stability of (Mn2.1-xNi0.9Six)O4 (0≤x≤0.18) negative temperature coefficient thermistors”, Mater. Lett, vol. 58, pp933-937, 2004.
 B. Gillot, J. L Baudour, F. Bouree, etal., “Ionic configuration and cation distribution in cubic nickel manganite spinels NixMn3−xO4 (0.57<x<1) in relation with thermal histories, Solid State Ionics, vol. 58, pp155-161, 1992.
 K. Park, “Microstructure and electrical properties of Ni1.0Mn2−xZrxO4 (0≤x≤1.0) negative temperature coefficient thermistors ” Mater, Sci. Eng. B, vol 104, pp9-14, 2003.
 J. L. M. Vidales, P. Garcia-Chain, R. M. Rojas, E. Vila, O. GarciaMartinez, “Preparation and characterization of spinel type Mn-Ni-Co-O negative temperature coefficient ceramic thermistors”, J. Mater. Sci., Vol. 33, pp1491-1496, 1998.
 R. N. Jadhav, V.Puri, “Influence of copper substitution on structural, electrical and dielectric properties of Ni(1-x) CuxMn2O4 (o≤x≤1) ceramics”, J. of Alloys and Compounds, vol.507, pp.151-156, 2010.
 R. N. Jadhav, S. N. Mathad, V. Puri, “ Sutudies on the porperties of Ni0.6Cu0.4Mn2O4 NTC ceramic due to Fe doping”, Ceram. International, vol.38, pp. 5181-5188, 2012.
 A. Feltz, W. Polzl, “Spinel forming ceramics of the system FexNiyMn3-xyO4 for high temperature NTC thermistor applications”, J. Eur. Ceram. Soc., vol. 20, pp2353-2366, 2000.
 X. Li, Y. Luo, X. Li, “Preparation and electrical properties of perovskite ceramics in the system BaBi1−xSbxO3 (0 ≤ x ≤ 0.5)” J. of Alloys and compounds, vol. 509, pp.5373-5375, 2011.
 Y. Luo, X. Liu, “High temperature NTC BaTiO3-base ceramic resistors”, Mat. Letters, vol. 59, pp. 3881-3884, 2005.
 G. H. Jin, G. P. Choi, W. Y. Lee, and J. S. Park, “Gas Sensing Property of Perovskite SrTi1−xFexO3 Fabricated by Thick Film Planar Technology”, J. of Nanoscience and Nanotechnology, vol. 11, pp.1738–1741, 2011.
 W. Y. Lee, D. M. Na and J. S. Park, “Planar sensor properties of perovskite Sr(Ti1-xFex)O3-δ powders prepared by a sol gel Method” J. of Ceram. Processing Research. vol. 13(6), pp. 717-720, 2012.
 S. H. Choi, S. J. Choi, B. K. Min, W. Y. Lee, J. S. Park, I. D. Kim, “Facile Synthesis of p-type Perovskite SrTi0.65Fe0.35O3–d Nanofibers Prepared by Electrospinning and Their Oxygen-Sensing Properties”, Macromol. Mater. Eng., vol. 298(5), pp.521–527, 2013.
 G.Thornton, B.C.Tofield, D.E.Williams, “Spin state equilibria and the semiconductor to metal transition of LaCoO3”, Solid State Commun., vol.44, pp1213, 1982.
 K. Asai, A. Yokokura, J.M. Tranquada, etal., “Two spin-state transitions in LaCoO3”, J. Phys. Soc. Jpn., vol. 67, pp290, 1998.