Structure and related physical properties of Li 2 O-Sb 2 O 3 -B 2 O 3 glasses
Abstract Glasses of the formula 40Li 2 O· x Sb 2 O 3 ·(60– x )B 2 O 3 (0 ≤ x ≤ 40 mol%) were prepared using the melt quenching technique. XRD, FTIR spectroscopy, SEM, density and dc conductivity were studied. A phase separation was observed in as-prepared glass samples that contain a concentration...
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| Published in | Physica scripta Vol. 97; no. 8; p. 85823 |
|---|---|
| Main Authors | , , , |
| Format | Journal Article |
| Language | English |
| Published |
01.08.2022
|
| Online Access | Get full text |
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| Summary: | Abstract
Glasses of the formula 40Li
2
O·
x
Sb
2
O
3
·(60–
x
)B
2
O
3
(0 ≤
x
≤ 40 mol%) were prepared using the melt quenching technique. XRD, FTIR spectroscopy, SEM, density and dc conductivity were studied. A phase separation was observed in as-prepared glass samples that contain a concentration of Sb
2
O
3
≥ 25 mol%. Moreover, crystalline phases of Li
5
Sb
3
O
8
, Li
3
SbO
4
and LiSbO
3
were found in the 40Li
2
O·40Sb
2
O
3
·20B
2
O
3
glass sample after thermal treatment at 600 °C for 4 h.
N
4
decreased slightly with increasing Sb
2
O
3
content. The contribution to
N
4
from Li
2
O and Sb
2
O
3
was separated. The negative contribution of Sb
2
O
3
to
N
4
was due to the association of Sb
2
O
3
and Li
2
O to form Li
5
Sb
3
O
8
, Li
3
SbO
4
and LiSbO
3
phases and acting as a former. The formed Li
5
Sb
3
O
8
, Li
3
SbO
4
phases having low migration energy and rich with Li
+
ions exhibited a high mobility. Density and molar volume increased with increasing Sb
2
O
3
content. The abrupt increase in the conductivity by about 4 orders in magnitude for Sb
2
O
3
≥ 25 mol% is correlated with the presence of clusters rich by Li
+
and Sb
+3
ions that have low migration energies and the increase in the free volume. |
|---|---|
| ISSN: | 0031-8949 1402-4896 |
| DOI: | 10.1088/1402-4896/ac8184 |