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Reducing the density of threading dislocations
in GaAs epitaxial layers. Efficiency assessment
of isovalent Bi doping and Pb doping
YE. BAGANOV1*, V. KRASNOV2, O. LEBED3, S. SHUTOV2
1Kherson National Technical University,
24 Berislavskoye shosse
Kherson, 73008, Ukraine
2V. Lashkarev Institute of Semiconductor Physics,
National Academy of Sciences of Ukraine,
41 Prospect Nauki,
Kiev, 03028, Ukraine
3Kherson Marine Institute,
14 Prospect Ushakova,
Kherson, 73000, Ukraine
Growth and characterization of an NLO material
– crystal of triglycine acetate
S.S. HUSSAINI1, N.R. DHUMANE1, V.G. DONGRE2, M.D. SHIRSAT2*
1Optoelectronics and Sensor Research Laboratory,
Department of Physics,
Dr. Babasaheb Ambedkar Marathwada University,
Aurangabad 431 004 (MS), India
2Department of Chemistry,
University of Mumbai, Kalina Campus,
Vidyanagari, Santa Cruz (East) Mumbai 400 098 (MS), India
Dielectric relaxation and ac conductivity
of WO3 added (Na1/2Bi1/2)TiO3 ceramic
K. PRASAD1*, K. KUMARI1, K. P. CHANDRA2, K. L. YADAV3, S. SEN4
1Materials Research Laboratory,
University Department of Physics,
T. M. Bhagalpur University, Bhagalpur 812 007, India
2Department of Physics,
S.M. College, T. M. Bhagalpur University,
Bhagalpur 812 001, India
3Department of Physics,
Indian Institute of Technology,
Roorkee 247 667, India
4National Metallurgical Laboratory,
Jamshedpur 831 007, India
Abstract
Ceramic samples of WO3 added (Na1/2Bi1/2)TiO3 were prepared using a high-temperature solid-state reaction method. X-ray diffraction analyses indicate the formation of a single-phase orthorhombic structure. The apparent particle size and lattice strain are estimated using the Williamson–Hall plot. Dielectric studies revealed the relaxor behaviour and addition of WO3 shifted phase transition temperature as well as depolarization temperature of (Na1/2Bi1/2)TiO3 to higher side. ac impedance plots were used to analyse the electrical behaviour of samples in function of frequency at various temperatures. The ac impedance studies revealed the presence of the grain boundary effect and evidence of a negative temperature coefficient of resistance. Cole–Cole analysis indicated a non-Debye type dielectric relaxation. The ac conductivity obeys the universal power law. The pair approximation type correlated barrier hopping model explains the universal behaviour of the s exponent. The apparent activation energy of the conduction process and density of states at the Fermi level have been discussed.
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Electrical properties of tin phthalocyanine-based
heterostructures: SnPcCl2/GaP, SnPcCl2/InP
and SnPcCl2/GaAs
M.M. EL-NAHASS1, A.M. FARID1, H.H. AMER2, K.F. ABDEL-RAHMAN1*, H.A.M. ALI1
1Faculty of Education,
Ain Shams University, Cairo, Egypt
2National Centre for Radiation Research and Technology,
Nasr City, Cairo, Egypt
Characterisation and preparation of sonochemically
synthesised silver–silica nanocomposites
S. ASKARI, R. HALLADJ*, B. NASERNEJAD
1Chemical Engineering Department,
Amirkabir University of Technology,
P.O. Box 15875-4413,
Hafez Ave., Tehran, Iran
Preparation and characterization
of yttria stabilized zirconia minispheres
by the sol–gel drop generation method
J. JUDES*, V. KAMARAJ
Department of Ceramic Technology,
Anna University,
Chennai – 600025, India
Hydrosodalite ion exchange
in saturated Ca(OH)2 solution
D. VAIČIUKYNIENE*, K. BALTAKYS, A. KANTAUTAS
Faculty of Chemical Technology,
Kaunas University of Technology,
Radvilenu str. 19, 50254 Kaunas, Lithuania
Slip casting process for the manufacture
of tubular alumina microfiltration membranes
C. FALAMAKI1,2*, M. BEYHAGHI1
1Ceramics Department,
Materials and Energy Research Center,
P.O. Box 14155-4777, Tehran, Iran
22Chemical Engineering Department,
Amirkabir University of Technology
P.O. Box 15875-4413, Tehran, Iran
Influence of antimony oxide on the dielectric properties
of barium strontium titanate based ceramics
C. ZHANG*, Y. QU
Key Laboratory for Advanced Ceramics
and Machining Technology of Ministry of Education,
Tianjin University,
Tianjin 300072, P. R. China
Oxidation of activated carbon fibre
and its adsorption of amylase
Y. LI1., S. HU2
1Department of Logistic Services Administration,
North University of China,
Taiyuan 030051, P.R. China
2The Graduate School,
North University of China,
Taiyuan 030051, P. R. China
Hydrothermal synthesis of aqueous nano–TiO2 sols
S.MAHATA, D. KUNDU*
Sol-Gel Division, Central Glass and Ceramic Research Institute,
196, Raja S. C. Mullick Road, Kolkata 700 032, India
Room-temperature ferromagnetism
in Fe-doped Na0.5Bi0.5TiO3 crystals
Y.WANG1, G. XU1, L. YANG2, Z. REN1,
X.WEI1, W.WENG1, P. DU1, G. SHEN1, G. HAN1*.
1State Key Laboratory of Silicon Materials,
Department of Materials Science and Engineering,
Zhejiang University, Hangzhou 310027, PR China
2Shandong Research and Design Institute of Industrial Ceramics,
Zibo 255031, PR China
Controllable synthesis of ZnO nanostructures
by a simple solution route
J. WANG1,2*, S. HE1, S. ZHANG1, Z. LI1,
P. YANG1, X. JING1, M. ZHANG1, Z. JIANG2
1College of Material Science and Chemical Engineering,
Harbin Engineering University, Harbin 150001, P R China
2College of Chemical Engineering,
Harbin Institute of Technology, Harbin 150001, P.R. China
Deposition of Au, Au–V and Au–VOx
on Si wafers by co-sputtering technique
S. NARKSITIPAN1, T. BANNURU2, W.L. BROWN2, R.P.VINCI2, S. THONGTEM3*
1Department of Physics,
Faculty of Science, Maejo University,
Chiang Mai 50290, Thailand
2Department of Materials Science and Engineering,
Lehigh University,
Bethlehem, PA 18015, U.S.A
3Department of Physics and Materials Science,
Faculty of Science, Chiang Mai University,
Chiang Mai 50200, Thailand
Influence of WO3 content on the optical properties
of Eu3+-doped Bi2O3–B2O3–WO3 glasses
Z. WANG*, R. TONG, H. LIN, D. YANG
School of Chemical Material,
Dalian Polytechnic University,
Dalian 116034, P.R. China
Synthesis of claw-like CuO and its catalytic activity
in the thermal decomposition of ammonium perchlorate
J.WANG*, S. HE, Z. LI, X. JING, M. ZHANG
School of Material Science and Chemical Engineering,
Harbin Engineering University,
Harbin 150001, P. R. China
Fabrication of MWNTs–PANI composite
– a chemiresistive sensor material
for the detection of explosive gases
C.-L. YUAN1, C.-P. CHANG2*, Y.-S. HONG2, Y. SUNG3
1Graduate School of Defense Science,
Chung Cheng Institute of Technology,
National Defense University,
Tao-Yuan, Taiwan 335, ROC
2Department of Applied Chemistry & Materials Science,
Chung Cheng Institute of Technology,
National Defense University,
Tao-Yuan, Taiwan 335, ROC
Carbon supported Pt–Ni nanoparticles
as catalysts in direct methanol fuel cells
S. S. DIPTI1*, U.C. CHUNG2, W.S. CHUNG1
1School of Materials Science and Engineering,
Pusan National University,
Busan 609-735, Korea
2Busan R&D Center,
Korea Institute of Industrial Technology,
Busan 609-735, Korea
Composition and magnetic properties of M-Ba ferrite
powders fabricated via sugar-nitrates process
X. TANG*, Y.G. YANG
State Key Laboratory of OGRGE,
Southwest Petroleum University,
No. 8 Xindu Road, Chengdu 610500, P.R. China
Amorphous phase formation of Zr–Cu thin films
fabricated by magnetron co-sputtering
L.X. LI*, D.T. ZHANG, M. LI, H.X. WANG
College of Physics and Chemistry,
Henan Polytechnic University,
Jiaozuo, 454000 China
Effects of substrate temperature
on crystallite orientation of HfO2 thin films
L. WANG1,2*, B. FAN1,3, Z. WANG1 , X. CHENG1, Y. WU1, L. CHEN1
1Institute of Precision Optical Engineering,
Department of Physics, Tongji University,
Shanghai, 200092, China
2School of Media and Communications Technology,
Liaocheng University,
Shandong Province, 252059, China
Optorun Co. Ltd. Kawagoe Shi,
Saitama 350-0801 Japan
Hydrothermal synthesis and characterization
of tube-structured ZnO needles
Y. LI*, H. FENG, N. ZHANG, C. LIU
College of Science,
Civil Aviation University of China,
Tianjin, 300300, P.R. China
Study of hydrogen passivation in SiNx:H films
using Fourier transform infrared
and photoluminescence spectroscopy
S. CHOPRA1, R.P. GUPTA2, B.C. JOSHI2, G. ERANNA2, S. BANERJEE3*
1Department of Physics,
Birla Institute of Technology and Science,
Pilani, Rajasthan-333031, India
2Semiconductor Device Fabrication,
Central Electronics Engineering Research Institute,
Pilani, Rajasthan-333031, India
3Department of Physics,
Birla Institute of Technology and Science
Pilani, Hyderabad Campus, Andhra Pradesh, India
The van der Pauw method of measurements
in high-Tc superconductors
M. S. DA LUZ*, C. A. M. DOS SANTOS, C. Y. SHIGUE,
F. J. H. DE CARVALHO JR., A. J. S. MACHADO
Escola de Engenharia de Lorena - USP,
P. O. Box 116,
Lorena, SP 12602-810, Brazil
Dielectric properties of lignocellulosic
materials–polypropylene composites
E. MARKIEWICZ1*, D. PAUKSZTA2, S. BORYSIAK2
1Institute of Molecular Physics,
Polish Academy of Sciences,
Smoluchowskiego 17, 60-179 Poznań, Poland
2Institute of Chemical Technology and Engineering,
Poznań University of Technology,
M. Skłodowskiej-Curie 2, 60-965 Poznań, Poland
A computational study of hydrogen embrittlement
phenomena in an iron nickel based alloy
S. I. SIMONETTI1,2*, G. P. BRIZUELA2, A. JUAN2
1Centro de Investigaciones en Mecánica Teórica y Aplicada,
Universidad Tecnológica Nacional,
11 de Abril 461, 8000 Bahía Blanca, Argentina
2Departamento de Física,
Universidad Nacional del Sur,
Av. Alem 1253, 8000 Bahía Blanca, Argentina
A study of the gas specificity
of porous silicon sensors for organic vapours
S.-H. CHOI, H. CHENG, S.-H. PARK, H.-J. KIM, Y.-Y. KIM, K.-W. LEE*
Department of Physics,
Kongju National University,
314-701 Chungnam, Republic of Korea
