Umesh, B and Eraiah, B and Nagabhushana, BM and Nagabhushana, H and Premkumar, HB and Shivakumara, C and Chikkahanumantharayappa, , and Chakradhar, RPS (2009) Nd2O3 : Eu3+ nanocrystalline phosphor - a new potential thermoluminescing material for dosimetry. In: Philosophical Magazine Letters, 89 (10). pp. 589-597.
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Nanoparticles of trivalent Eu3+-doped Nd2O3 phosphors have been prepared using a low-temperature solution combustion method with metal nitrate as precursor and oxalyldihydrazide as a fuel at a fairly low temperature (<500 degrees C) and in a very short time (<5 min). A powder X-ray diffraction pattern reveals that cubic Nd2O3 : Eu3+ crystallites are directly obtained without the requirement of further calcinations. The crystallite size, evaluated from Scherer's formula, was found to be in the range of 20-30 nm. The microstructure and morphology were studied by scanning electron microscopy, which showed the phosphor to be foamy and fluffy in nature. Thermoluminescence characteristics of the Nd2O3 : Eu3+ have been studied using gamma irradiation. These demonstrate that the phosphor is suitable for use as a dosimeter.
|Item Type:||Journal Article|
|Additional Information:||Copyright for this article belongs to Taylor and Francis Group.|
|Keywords:||nanocrystalline material; dosimetry; chemical synthesis; luminescence|
|Department/Centre:||Division of Chemical Sciences > Solid State & Structural Chemistry Unit|
|Date Deposited:||30 Nov 2009 06:23|
|Last Modified:||19 Sep 2010 05:52|
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