Impact of Nd2O3 on physical properties of lead borate glass system

Abstract

<p class="15"><span>The Nd</span><sub><span>2</span></sub><span>O</span><sub><span>3</span></sub><span> doped lead borate glass with composition 45B</span><sub><span>2</span></sub><span>O</span><sub><span>3</span></sub><span>-(40-x)PbO-11ZnO-4Na</span><sub><span>2</span></sub><span>O-xNd</span><sub><span>2</span></sub><span>O</span><sub><span>3</span></sub><span> (x=0; 0.5; 1.0; 1.5; 2.0; 2.5) mol% were fabricated using melt quenching method at 950</span><sup><span>o</span></sup><span>C for 35 minutes. The characterization of physical properties of glasses doped Nd</span><sub><span>2</span></sub><span>O</span><sub><span>3 </span></sub><span>were measured by density (ρ) based on the Archimedes principle. The other physical parameters such as molar volume (Vm), oxygen packing density (OPD), polaron radius (r</span><sub><span>p</span></sub><span>), ionic radius (r</span><sub><span>i</span></sub><span>), field strength (F), molar refraction (R</span><sub><span>m</span></sub><span>), and metallization (M</span><sub><span>n</span></sub><span>) were calculated using equation which derived from density. According to the measurement, the density of glasses decreased from 5.774 to 4.527 gr/cm3 while molar volume oppositely increased from 23.17 to 30.18 cm</span><sup><span>3</span></sup><span>/mol due to atomic mass of Nd (144.24) smaller than Pb (207.2). Along with the increase of molar volume, there were decreasing of the OPD, the polar radius (1.731 <span style="font-family: 'Times New Roman';">－</span><span style="font-family: Times;">1.095) Å and the ion radius (4.296</span><span style="font-family: 'Times New Roman';">－</span><span style="font-family: Times;">2.717) Å iof glasses Meanwhile, the field strength and metallization properties of the glasses increased as a result of the reduction r</span></span><sub><span>p</span></sub><span> and r</span><sub><span>i</span></sub><span>. The investigation of molar refractive shows an increasing trend because the addition of the concentration Nd</span><sub><span>2</span></sub><span>O</span><sub><span>3.</span></sub></p>