Next Materials,
Год журнала:
2023,
Номер
1(4), С. 100043 - 100043
Опубликована: Окт. 14, 2023
Chemical
modification
is
the
frequently-adopted
strategy
to
enhance
electromechanical
properties
of
piezoelectric
ceramics.
However,
chemically
modified
materials
will
inevitably
produce
point
defects,
such
as
dopant
ions,
oxygen
vacancies,
etc.
In
this
study,
we
investigated
defect-engineered
Pb(Zr,Ti)O3
(denoted
by
PSZT–Fe)
polycrystals
after
aging,
quenching,
poling,
and
de-aging
processes.
At
same
time,
a
general
mechanism
on
strength
defect
dipole
also
put
forward
explain
corresponding
changes.
After
spontaneous
polarization
PSZT-Fe
can
be
changed
instantly
upon
application
external
electric
field,
but
its
symmetry
can't
change
simultaneously.
Therefore,
field
removed,
defective
would
drive
domain
back
original
state,
resulting
in
restorable
strain
effect
macroscopic
pinch
polarization.
Bipolar
cycling
effectively
redistribute
vacancies
random
so
that
aged
recover
electrical
typical
ferroelectrics,
similar
quenched
samples.
The
poled
ceramics
are
driven
an
parallel
each
other,
which
results
emergence
internal
bias
accounting
for
asymmetric
hysteresis
loop.
Ceramics - Silikaty,
Год журнала:
2024,
Номер
unknown, С. 0 - 0
Опубликована: Июль 16, 2024
Lead
zirconate
titanate
(PZT)
piezoelectric
ceramics
have
emerged
as
a
leading
material
for
human
motion
monitoring
and
energy
harvesting
applications
due
to
their
exceptional
properties,
high
Curie
temperature,
versatility
in
device
fabrication.This
review
provides
comprehensive
overview
of
the
fundamentals
PZT
ceramics,
including
crystal
structure,
phase
diagram,
mechanisms
underlying
response.The
intrinsic
extrinsic
contributions
properties
are
discussed,
along
with
key
factors
influencing
its
performance.Various
PZT-based
devices
monitoring,
such
accelerometers,
gyroscopes,
pressure
sensors,
explored,
highlighting
advantages
commercial
implementations.Moreover,
application
materials
from
is
examined,
focusing
on
configurations,
performance
metrics,
state--of-the-art
harvesters.Strategies
enhancing
challenges
associated
use
also
addressed.Finally,
future
research
directions
outlined,
emphasising
development
lead-free
alternatives,
advanced
manufacturing
techniques,
integration
other
functional
multifunctional
self-powered
systems.
Journal of the American Ceramic Society,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 23, 2025
Abstract
Lead
zirconate
titanate
(PZT)‐based
piezoelectric
ceramics
are
crucial
components
in
high‐power
magnetoelectric
(ME)
antenna
devices,
contributing
to
the
miniaturization
of
very
low
frequency
(VLF)
communication
systems.
The
coefficient
(
d
33
)
and
mechanical
quality
factor
Q
m
determine
radiation
performance
device
and,
therefore,
play
a
pivotal
role
preparation
selection.
However,
achieving
high
values
for
both
simultaneously
proves
challenging,
as
these
properties
often
tend
compete
with
each
other.
Herein,
we
address
this
challenge
by
introducing
MnCO
3
‐modified
lead
magnesium
niobate
(PMN)‐PZT
ceramics,
leveraging
elements
doping
achieve
well‐balanced
performance,
where
was
optimized
530
pC/N,
while
concurrently
attaining
624,
being
attributed
synergistic
contributions
from
defect
dipole
vacancies.
Notably,
PMN‐PZT‐based
exhibits
significantly
enhanced
converse
ME
α
CME
=
0.138
Oe·cm/V,
which
improves
emission
about
25%
compared
commercial
PZT‐4
samples.
These
findings
offer
promising
theoretical
foundation
feasible
technical
pathway
development
design
antennas
future.
ACS Applied Materials & Interfaces,
Год журнала:
2024,
Номер
16(43), С. 58872 - 58879
Опубликована: Окт. 17, 2024
High-power
piezoelectric
ceramics
typically
operate
under
severe
conditions.
This
makes
the
accurate
evaluation
of
their
high-power
performances
through
pure
quasi-static
parameters
challenging.
The
0.94PbZr0.5Ti0.5O3
-
0.06Pb(Mn1/3Nb2/3)O3
+
0.005Fe2O3
0.002Sc2O3
(PZT-1)
ceramic
exhibits
exceptional
and
reliable
at
elevated
temperatures
loading
While
numerous
PZT-based
demonstrate
excellent
parameters,
only
PZT-1
displays
superior
high-field
such
as
a
low
tan
δ
0.97%
566
V/mm
(1
kHz)
large
Qm
1164
50
(100
kHz).
Therefore,
demonstrates
remarkably
slow
heat
generation
highest
surface
are
41.8
°C
Moreover,
shows
minimal
resonance
frequency
variation
-0.04%
in
temperature
range
25-120
V/mm.
Consequently,
maintains
high
vibration
velocity
0.90
m/s
120
for
30
min,
cantilever
sustains
amplitude
7
μm,
significantly
outperforming
other
ceramics.
study
conclusively
that
rather
than
more
effective
accurately
estimating
