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Effects of Substitutions of Titanium(IV) Ions by Iron(III) and Niobium(V) Ions on Phase Formation in Lanthanide-Containing Systems Comprising Layered Bismuth Titanate Ferrite
Phase formation in the series of Bi 3 Nd 2 Fe 1 + y Ti 3 – 2 y Nb y O 15 and Bi 3 Tb 2 Fe 1 + y Ti 3 – 2 y Nb y O 15 ( y = 0.0–0.6 and Δ y = 0.2) samples is studied. When Bi 3 Nd 2 Fe 1 + y Ti 3 – 2 y Nb y O 15 solid solutions (ss) are doped with niobium(V) ions, the formation of Bi 3 Nd 2 FeT...
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Published in: | Russian journal of inorganic chemistry 2020-11, Vol.65 (11), p.1654-1661 |
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Main Authors: | , , , , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | Phase formation in the series of Bi
3
Nd
2
Fe
1 +
y
Ti
3 – 2
y
Nb
y
O
15
and Bi
3
Tb
2
Fe
1 +
y
Ti
3 – 2
y
Nb
y
O
15
(
y
= 0.0–0.6 and Δ
y
= 0.2) samples is studied. When Bi
3
Nd
2
Fe
1 +
y
Ti
3 – 2
y
Nb
y
O
15
solid solutions (ss) are doped with niobium(V) ions, the formation of Bi
3
Nd
2
FeTi
3
O
15
layered perovskite, a member of the Aurivillius phase family of general formula A
m
– 1
Bi
2
B
m
O
3
m
+ 3
(
m
= 4), is not dominant in samples where
y
≥ 0.2. Bi
4
Ti
3
O
12
(
m
= 3) and NdFeO
3
phases are formed in the course of phase interaction under the chosen conditions. With higher niobium(V) amounts, a Bi
2
Ti
2
O
7
-base pyrochlore ss phase is formed in the Bi
3
Tb
2
Fe
1 +
y
Ti
3 – 2
y
Nb
y
O
15
multicomponent system. Dielectric spectroscopy shows that the phases in samples of both series where
y
> 0.0 undergo structural alterations associated with magnetic and electric ordering. |
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ISSN: | 0036-0236 1531-8613 |
DOI: | 10.1134/S0036023620110133 |