Ferroelectricity in the glassy material of the composition Bi2O3–Pb3O4–CuO–K2O

Thermal, structural and magnetic properties of some zinc phosphate glasses doped with manganese ions

“…[31,35]. Though Mn 2+ and Mn 3+ ions are both paramagnetic, only Mn 2+ (3d5, 6 S 5/2 ) shows EPR absorptions at room temperature. It is well known that in case of d 5 metal ions, the axial distortion of octahedral symmetry gives rise to three Kramers doublets ±5/2 , ±3/2 and ±1/2 .…”

“…Glasses containing transition metal ions (TMI) have attracted much attention due to their electrical [1][2][3][4][5][6][7], optical [8][9][10][11][12][13] and magnetic properties [14][15][16][17] which render them suitable for large practical and potential applications in many fields such as memory switching [18,19] electronics [5,6,12,15], catalysis [20][21][22] and magnetic information storage [10,14,16]. These properties of the TMI glasses arise from the presence of TMI in multivalent states [4,[23][24][25][26].…”

Broadband near-infrared emission in Er3+–Tm3+ co-doped bismuthate glasses

“…Bismuthate glasses have important advantages for optical (including structure) and electrical properties over other common oxide glasses [11][12][13][14][15]. Our previous work indicated that bismuthate glass (Bi 2 O 3 -GeO 2 -Na 2 O) has a phonon energy of ∼440 cm −1 , which is significantly lower than both silicates and tellurites [12], and comparable to chalcogenides [16].…”

The effect of copper ions addition on structural and optical properties of zinc borate glasses

“…On the other hand, glasses doped with transitional metal ions (TMI) attract much attention because of their interesting electrical [6][7][8], optical [9][10][11] and magnetic properties [12][13][14][15][16]. These properties are determined by the presence of TMI in multivalent states, by the environment of TMI as well as by the TMI content and its distribution in the glass matrix.…”

“…These properties are determined by the presence of TMI in multivalent states, by the environment of TMI as well as by the TMI content and its distribution in the glass matrix. Because of these properties glasses containing TMI are useful for large practical and potential applications in many fields, such as electronics [6,7,10,12], magnetic information storage [11,12,15], tunable solid state lasers and fiber optic communication systems [9]. The properties of glasses are mainly determined by the degree of local order/disorder, so that investigations giving information about the local structure are important in order to understand the correlation between properties and structure.…”