Processing and Application of Ceramics,
Journal Year:
2024,
Volume and Issue:
18(4), P. 357 - 365
Published: Jan. 1, 2024
In
this
research,
(1-x)(Ba0.9Sr0.1)TiO3-xBi(Mg2/3Nb1/3)O3
(BST-BMN,
where
x
=
0,
0.06,
0.08,
0.12
and
0.20)
powders
were
synthesized
via
a
solid-state
reaction
method.
The
corresponding
lead-free
ceramics
obtained
at
the
optimal
sintering
temperature.
For
?
material
formed
dense,
homogeneous
pseudocubic
perovskite
structures.
increase
of
BMN
content
induces
strong
relaxor
behaviours
with
diffuse
phase
transition
characteristics,
enhancing
temperature
stability
dielectric
properties.
Consequently,
exhibited
narrow
polarization-electric
field
(P-E)
loops
superior
energy
storage
capabilities.
composition
0.88BST-0.12BMN
was
found
to
be
optimal,
attributed
improvement
in
breakdown
strength,
yielding
recoverable
density
2.504
J/cm3
an
efficiency
90.2%under
electric
strength
250
kV/cm.
Furthermore,
ceramic
retains
consistent
across
temperatures
ranging
from
20
120?C
frequencies
1
100Hz,
underscoring
its
potential
for
application
high-power
pulsed
capacitors.
Inorganic Chemistry Frontiers,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 1, 2025
The
sandwich
structure
design
strategy
can
effectively
overcome
the
trade-off
between
polarization
and
breakdown
strength
in
dielectric
ceramics,
achieving
exceptionally
high
energy
storage
performance.
