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Volume 8, No. 2,
2015, 1436 H
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English
Articles |
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Structural
and
Magnetic
Properties
of Pr0.7Bi0.3Mn1−xFexO3
(0 ≤ x ≤
0.2)
Manganites
Oxides
Prepared
by
Sol-gel
Method
The
morphology,
structural
and
magnetic
properties
of
Pr0.7Bi0.3Mn1-xFexO3
manganites
oxides,
prepared
by
sol-gel
method,
have
been
investigated
to study
the
effect
of the
substitution
of Mn by
Fe.
X-ray
powder
diffraction,
Scanning
Electron
Microscopy
(SEM),
Fourier
transforms
infrared
spectroscopy
(FT-IR)
and
magnetic
measurements
for the
systems
have
been
investigated.
Rietveld
analysis
of the
X-ray
powder
diffraction
show
that the
samples
crystallize
in the
orthorhombic
perovskite
system
with
Pnma
space
group.
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Kh.
Sbissi,
D.
Fatnassi,
M.
Ellouze,
E. K.
Hlil and
F.
Elhalouani
JJP,
2015, 8(2)
,
67-78
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Electron
Microscopy-Based
Performance
Evaluation
of
Various
Tungsten
Field-Emitter
Tips
Apex
Radii
Field
electron
emission
measurements
have
been
performed
on
emitters
consisting
of
electrochemically
etched
tungsten (W)
wires,
where
the
microemitters
apex
radii
have
been
varied
ranging
from 90
to
300 nm.
A
conventional
field
electron
microscope (FEM)
with
10 mm
tip (cathode) – screen (anode)
distance
was used
to
electrically
characterize
the
electron
emitters
under
ultra
high
vacuum (UHV)
conditions.
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M. A.
Madanat,
M. S.
Mousa,
A. N.
Al-Rabadi
and
A.
Fischer
JJP,
2015, 8(2)
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79-85
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COLTRIMS
Imaging
of
Molecular
Fragmentation
Dynamics
of CO
Molecules
Induced
by Slow
He2+
Ions
We study
the
multiple
ionization
and
fragmentation
of
CO in
collisions
with
slow He2+
ions.
Correlated
measurements
of all
fragment
ions and
the
projectile
final
charge
state
were
performed
using
our
coincidence
COLTRIMS
imaging
technique
coupled
to
projectile
charge
state
separation.
Complete
fragmentations
of CO,
following
double
electron
capture,
into Cm++On+
with a
total
charge
of 4
were
investigated.
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Feras R.
Afaneh
JJP,
2015, 8(2)
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87-93
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Investigating
the
Effects
of
Sample
Conditioning
on Nano-Apex
Carbon
Fiber
Tips for
Efficient
Field
Electron
Emission
Carbon
fibers
represent
a very
interesting
material
for
field
electron
emitters.
While
the
preparation
of sharp
carbon
fiber
tips is
very
similar
to the
conventional
method
used for
tungsten
tips,
much
smaller
apex
radii
can be
obtained.
Within
the
study
presented
here,
such
emitters
have
been
prepared
and
tested
using a
standard
field
emission
microscope
(FEM).
Various
properties
of these
emitters
were
measured
including
the
relationship
between
emitted
electron
current
and
applied
voltage
to the
tip (the
current-voltage
characteristics)
and the
corresponding
electron
emission
images.
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S.
Alnawasreh,
M. S.
Mousaa
and
A. N.
Al-Rabadib
JJP,
2015, 8(2)
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95-101
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The
Effect
of Z907
Dye on
the
Performance
of Solar
Cells
Based on
the
Nc-TiO2
Semiconducting
Polymer
Heterojunction
This
work
studies
the
effect
of
cis-bis(isothiocyanato)(2,2'-bipyridyl-4,4'-dicarboxylato)(4,4'-di-nonyl-2'-bipyridyl)
ruthenium(II)
(Z907 dye)
on the
performance
of
nanocrystalline
titanium
dioxide
(nc-TiO2)/Poly3-hexylthiophene
(P3HT)
heterojunction
solar
cells.
Specifically,
the
P3HT/Z907dye/nc-TiO2
solar
cells
increase
the
short
circuit
current,
Jsc,
from
0.17 mA/cm2
to 0.3
mA/cm2,
the open
circuit
voltage,
Voc,
from
0.45 V
to 0.7 V
and the
power
conversion
efficiency,
η, from
0.03% to
0.08%
compared
with the
P3HT/nc-TiO2
solar
cells.
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H. Al-Dmour
JJP,
2015, 8(2)
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103-111
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Effect
of Dust
and
Ambient
Temperature
on PV
Panels
Performance
in Egypt
This
study
investigated
the
effects
of dust
deposition
and
ambient
air
temperature
on the
performance
of a
thin
film
photovoltaic
module
under
real
outdoor
conditions
in the
humid
harsh
climate
of
Egypt.
The
experimental
study
investigated
the
effect
of dust
deposition
and the
effect
of
ambient
air dry
bulb
temperature
on the
performance
of the
PV
module.
Theoretical
study
predicted
the
temperature
of the
PV
panels
at
various
metrological
conditions
in
different
locations
inside
Egypt.
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Ahmed
Hamza H.
Ali,
Ahmed.
M. Serag
ElDin
and S.
M.
Abdel-Gaied
JJP,
2015, 8(2)
,
113-124
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