Investigation of structural and optical properties of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si1.svg"><mml:msup><mml:mtext>Ni</mml:mtext><mml:mrow><mml:mn>2</mml:mn><mml:mo>+</mml:mo></mml:mrow></mml:msup></mml:math> ions-bearing borate glass through barium ions addition

Fatma Gami, Ikram Guizan, M.A. Seba, Majed Alzara, Huda G. Alharb, Hesham Y. Amin, Essam A. Elkelany