Application of tellurite bonding glasses to magnetic heads

TeO2–WO3 Glasses: Infrared, XPS and XANES Structural Characterizations

“…1b, the major band shifts from 620 cm À1 (x ¼ 0) to 665 cm À1 (x ¼ 0:325). This may be related to the apparition of TeO 3 E units concomitant to a reduction in the number of TeO 4 E units (24,25). The 770 cm À1 shoulder relative to the existence of TeO 4 E units is still present for x ¼ 0:325:…”

Vibrational, EPR and optical spectroscopy of the Cu2+ doped glasses with (90–x)TeO2–10GeO2–xWO3 (7.5 ≤ x ≤ 30) composition

“…The intensity of the absorption bands in the region 660-675 cm −1 typical for TeO 3 units increases with WO 3 content. The observed variation in the intensity and shift of the bands may be related to the apparition of TeO 3 units concomitant to a reduction in the number of TeO 4 units [25]. Thus the effect of addition of WO 3 content to the TeO 2 glass matrix is to transform the TeO 4 basic structural units forming the TeO 2 glass to TeO 3 units.…”

Characterisation of glasses in the TeO2–WO3–PbO system

“…6,[29][30][31] In binary TeO 2 -WO 3 glasses the band at 650 cm −1 due to Te-O ax vibrations also shifts slightly towards lower frequencies. This can be attributed to the formation of non-bridging oxygens Te-O − that, in addition, cause the progressive band broadening.…”