Article

Nd2O3 : Eu3+ nanocrystalline phosphor - a new potential thermoluminescing material for dosimetry

DOI: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.
Source: OAI

ABSTRACT 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.

0 0
 · 
0 Bookmarks
 · 
41 Views
Data provided are for informational purposes only. Although carefully collected, accuracy cannot be guaranteed. The impact factor represents a rough estimation of the journal's impact factor and does not reflect the actual current impact factor. Publisher conditions are provided by RoMEO. Differing provisions from the publisher's actual policy or licence agreement may be applicable.

Keywords

calcinations
 
dosimeter
 
foamy
 
low-temperature solution combustion method
 
metal nitrate
 
microstructure
 
Nanoparticles
 
oxalyldihydrazide
 
powder X-ray diffraction pattern
 
scanning electron microscopy
 
Scherer's formula
 
short time
 
trivalent Eu3+-doped Nd2O3 phosphors