Advanced Functional Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 3, 2025
Abstract
Excellent
pyroelectric
performance
in
environmentally
friendly
lead‐free
ferroelectrics
is
highly
demanded
for
uncooled
infrared
detector.
However,
the
trade‐off
between
room
temperature
coefficient
(
p
)
and
depolarization
T
d
remains
a
major
challenge
of
their
device
applications.
Herein,
superior
13.8
×
10
−4
C
m
−2
K
−1
with
high
155
°C
achieved
quenched
BNT‐Fe/Mn‐NBT
sample.
Oxygen
vacancy
engineering
proposed
to
solve
constraint
BNT‐based
ceramics.
The
local
A/B
site
displacement
oxygen
vacancies
are
constructed
perovskite
structure
by
quenching
treatment,
resulting
larger
lattice
distortion
.
Meanwhile,
defect‐induced
inhomogeneous
random
field
compensates
ferroelectric
down‐shifts
free
energy
well,
maintaining
detector
made
from
high‐performance
generates
voltage
responsivity
5906
V
W
specific
detection
rate
1.8
8
cm
Hz
1/2
,
which
comparable
commercial
RD‐624
type
PZT‐based
ACS Nano,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 3, 2025
Polar
vortices
are
predominantly
observed
within
the
confined
ferroelectric
films
and
ferroelectric/paraelectric
superlattices.
This
raises
intriguing
question
of
whether
polar
can
form
relaxor
ceramics
subsequently
contribute
to
their
energy
storage
performances.
Here,
we
incorporate
10
mol
%
CaSnO
Journal of Materials Chemistry C,
Journal Year:
2024,
Volume and Issue:
12(18), P. 6479 - 6486
Published: Jan. 1, 2024
We
have
successfully
achieved
high
energy
storage
density
and
efficiency
under
low
electric
fields
through
the
compositional
synergetic
design
of
a
ternary
solid
solution
system,
Bi
0.5
Na
TiO
3
–BaZr
0.3
Ti
0.7
O
–NaNbO
.
Journal of the American Ceramic Society,
Journal Year:
2024,
Volume and Issue:
107(9), P. 6294 - 6306
Published: May 17, 2024
Abstract
The
development
of
ceramics
with
superior
energy
storage
performance
and
transparency
holds
the
potential
to
broaden
their
applications
in
various
fields,
including
optoelectronics,
devices,
transparent
displays.
However,
designing
a
material
that
can
achieve
high
density
under
low
electric
fields
remains
challenge.
In
this
work,
(1−
x
)Bi
0.5
Na
TiO
3
−
BaZr
0.3
Ti
0.7
O
:0.6mol%Er
3+
(abbreviated
as
)BNT−
BZT:0.6%Er
)
ferroelectric
translucent
were
prepared
by
conventional
solid‐state
reaction
method.
properties
are
systematically
investigated
modulating
coupling
between
coexisting
phase
structures
polar
nano
regions.
Especially,
0.9BNT–0.1BZT:0.6%Er
ceramic
exhibits
an
ultra‐high
maximum
polarization
(
P
max
=
66.3
µC/cm
2
),
large
recoverable
W
rec
2.95
J/cm
total
5.75
efficiency
η
51.3%)
190
kV/cm.
sample
also
excellent
thermal
stability
(30‐150°C)
transmittance
(∼28%).
This
work
could
facilitate
advancement
systems
more
efficient
cost‐effective,
provide
opportunities
for
design
manufacture
novel
devices.
