@article { ISI:000244008300028,
	title = {Influence of surfactant on ZnO varistors},
	journal = {Ceramics International},
	volume = {33},
	number = {2},
	year = {2007},
	month = {MAR},
	pages = {289-291},
	publisher = {ELSEVIER SCI LTD},
	type = {Article},
	address = {THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND},
	abstract = {<p>ZnO varistors with and without surfactant such as sodium dodecyl sulphate (SIDS) are prepared by nitrate-combustion process. The samples were identically heat treated and sintered at 1000 degrees C for 12 h to study the influence of the surfactant on the nonlinear electrical properties of polycrystalline ZnO. It is observed that the nonlinear coefficient decreases marginally (alpha = 35) for samples prepared with surfactant, whereas breakdown field (E-B = 130 V/mm) decreased significantly. The corresponding parameters for the samples synthesized without surfactant are alpha = 45 and E-B = 400 V/mm. Hence, this method can be used for the manufacture of varistors with low to moderate breakdown fields. (c) 2005 Elsevier Ltd and Techna Group S.r.l. All rights reserved.</p>},
	keywords = {Chemical synthesis, Semiconductors, X-ray methods, ZnO},
	issn = {0272-8842},
	doi = {10.1016/j.ceramint.2005.08.010},
	author = {Dhage, S. R. and Navale, S. C. and Ravi, V.}
}
@article { ISI:000250178900006,
	title = {Low temperature synthesis and NOx sensing properties of nanostructured Al-doped ZnO},
	journal = {Sensors and Actuators B-Chemical},
	volume = {126},
	number = {2},
	year = {2007},
	month = {OCT},
	pages = {382-386},
	publisher = {ELSEVIER SCIENCE SA},
	type = {Article},
	address = {PO BOX 564, 1001 LAUSANNE, SWITZERLAND},
	abstract = {<p>Although ZnO is studied intensively as a sensing material, there are limited reports available on aluminum-doped ZnO (AZO) as a NO, sensor. This paper reports selective NO, sensing characteristics of M-doped ZnO synthesized in the form of porous pellets sintered at 350 degrees C. The salient feature of our experimental results is that our sensor can detect small concentrations of NO, at lower operating temperature. It is also observed that as compared to gases such as SOx HCl, LPG, H2S, H-2, ammonia, alcohol and acetone it selectively detects NOx due to Al-doping. The amount of Al in ZnO during synthesis is varied between 1 and 10 wt\%. Our sensor senses NO, concentration as low as 20ppm at 100 degrees C with a \%response of 11 and a \%response of 740 at 300 degrees C for 1 wt\% Al. Of all the compositions with Al-doping, I wt\% is found to give best results. Sensing experiments carried out at 350 C, however. do not show any significant improvement in the gas sensing properties. The phase contents and lattice parameters were determined by XRD and the average particle size was obtained using Scherrer formula. A probable mechanism for sensing NO, involving oxygen ion adsorption and desorption on the surface of sensor has been suggested. (C) 2007 Elsevier B.V. All rights reserved.</p>},
	keywords = {aluminum doping, nanomaterial, NOx, Sensor, ZnO},
	issn = {0925-4005},
	doi = {10.1016/j.snb.2007.03.019},
	author = {Navale, S. C. and Ravi, V. and Mulla, Imtiaz S. and Gosavi, S. W. and Kulkarni, S. K.}
}
