Journal of Materiomics,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Aug. 1, 2024
The
direct
integration
of
crystalline
oxide
layers
with
industrial
Si
substrate,
specifically
compatible
CMOS
technology,
requires
the
development
relatively
simple,
low-temperature
processing
routes
below
450
°C.
Here,
a
novel
nonstoichiometric
approach
is
proposed
to
achieve
fabrication
BiFeO3
films
at
Of
particular
importance
that,
saturation
and
remnant
polarization
∼80
μC/cm2
∼60
strain
as
large
1%
are
obtained.
This
stands
one
most
impressive
values
reported
for
thin
films,
comparable
superior
obtained
in
ferroelectric
fabricated
temperatures
exceeding
700
current
work
provides
new
paradigm
significant
simplicity
efficacy
reducing
temperatures,
well
offers
promising
material
memory
piezo-driven
actuating
applications,
especially
meeting
increasing
demand
precision
position
control
systems
nanometer
scale.
Mechanics of Advanced Materials and Structures,
Journal Year:
2025,
Volume and Issue:
unknown, P. 1 - 22
Published: Feb. 16, 2025
The
current
work
aims
to
theoretically
investigate
the
surface–interface
effects
on
circumferential
antiplane
surface
wave
through
a
thin
piezoelectric
(PE)
layer
cylindrical
structure.
elasticity
has
been
formulated
in
coordinate
system
for
PE
material.
Along
with
parameters
such
as
and
density,
charges
are
also
considered.
material
properties
considered
heterogeneous
make
model
realistic.
dispersion
equation
shear
obtained
analytically
closed
form
electrically
short
open
cases
using
Bessel's
function.
of
essential
behavior
parameters,
coupling
parameter
radii
ratio,
heterogeneity
parameter,
prestress,
have
illustrated
numerical
simulation
graphs.
Each
graph
displayed
lowest
two
modes
facilitate
thorough
interpretation
dispersion.
Three-dimensional
plots
provided
interpret
field
variables.
It
found
that
size-dependent
sensitive
relation
only
when
is
thin.
study
findings
could
help
develop
nano/microsized
transducers
sensors.
Mechanics of Advanced Materials and Structures,
Journal Year:
2024,
Volume and Issue:
unknown, P. 1 - 21
Published: Feb. 29, 2024
This
work
has
explored
surface/interface
theory-based
torsional
wave
propagation
in
a
piezoelectric
fiber-reinforced
composite
(PFRC)
layer
on
top
of
functionally
graded
elastic
substrate.
PFRC
is
assumed
to
be
composed
fiber
and
epoxy
matrix.
Micro-mechanical
investigations
have
been
performed
determine
the
coefficients
using
strength
materials
(SM)
rule
mixtures
(RM)
techniques.
The
dispersion
relation
for
under
nonclassical
boundary
conditions
determined
theory.
effects
surface/interface,
volume
fractions,
heterogeneities
phase
velocity
mode
shapes
demonstrated
graphically.
