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.
Journal of Nanoelectronics and Optoelectronics,
Год журнала:
2024,
Номер
19(3), С. 293 - 300
Опубликована: Март 1, 2024
The
advancement
of
society
has
led
to
increasing
pressure
on
employment
in
human
resources.
Effectively
managing
and
alleviating
this
emerged
as
an
urgent
problem
be
addressed.
This
study
presents
a
novel
sensor
utilizing
microelectromechanical
systems
technology,
with
the
aim
offering
fresh
solution
for
resource
sector.
Firstly,
preparation
characterization
lead
zirconate
titanate
nanofibers,
followed
by
development
flexible
using
technology
specifically
designed
these
fibers.
Finally,
evaluates
performance
developed
sensor.
results
revealed
that
open
circuit
output
voltage
peaked
at
frequency
110
Hz,
indicating
highest
level
response.
In
addition,
it
was
observed
fabricated
exhibited
fluctuations
within
range
–3.8
V
5.0
V,
confirming
its
ability
precisely
respond
variations
external
any
given
moment.
features
gauge
render
ideal
tool
real-time
monitoring
evaluation
pressure,
thereby
possessing
wideranging
application
prospects.
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.
