Peculiarities of crystal structure and superfine interactions in alloys Ti-Co-Sn

Alloys with the general formula TiCo2-хSn were produced by way of sintering primary components – pure metals in an argon atmosphere. The alloys were homogenized by annealing in the evacuated quartz vessel at T=1070 K during 500 h. X-ray diffraction analysis confirmed single-phase condition of all samples. Nuclear gamma resonance (NGR) analysis was made at T=295 and 80 K using radiation source BaSn119Sn. It was established, that Sn atoms in samples with x=0.6 and 1.0 are in two crystallographic positions, pyramids (1) and tetrahedrons (2) to which isomer shifts correspond (relative to SnO2 1.52-1.65 mm/s for Sn(1) and 2.99 mm/s for Sn(2). Zeeman splitting for Sn(1) in TiCo2Sn takes place at T=295 and 80 K, and for compositions with x=0.3-1.0 at T=80 K only. For Sn(2) it is noted only in alloy TiCoSn at T=80 K. The conclusion has been made on the reason of formation of effective magnetic fields on non-magnetic tin atoms nuclei.

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The X-Ray Powder Diffraction Patterns and Crystal Structure for Al2M3Y(M=Cu, Ni)

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.950.48 ◽

2014 ◽

Vol 950 ◽

pp. 48-52

Author(s):

De Gui Li ◽

Ming Qin ◽

Liu Qing Liang ◽

Zhao Lu ◽

Shu Hui Liu ◽

...

Keyword(s):

Crystal Structure ◽

Powder Diffraction ◽

Diffraction Data ◽

Hexagonal Structure ◽

Argon Atmosphere ◽

X Ray Diffraction ◽

High Quality ◽

X Ray ◽

Arc Melting ◽

Diffraction Patterns

The Al2M3Y(M=Cu, Ni) compound was synthesized by arc melting under argon atmosphere. The high-quality powder X-ray diffraction data of Al2M3Y have been presented. The refinement of the X-ray diffraction patterns for the Al2M3Y compound show that the Al2M3Y has hexagonal structure, space groupP6/mmm(No.191), with a = b = 5.1618(2) Å, c = 4.1434(1) Å,V= 95.6 Å3,Z= 1,ڑx= 5.7922 g/cm3,F30= 155.5(0.0057, 34), RIR = 2.31 for Al2Cu3Y, and with a = b = 5.0399(1) Å, c = 4.0726(1) Å,V= 89.59 Å3,Z= 1,ڑx= 5.9118 g/cm3,F30= 135.7(0.0072, 30), RIR = 2.54 for Al2Ni3Y.

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Nanocrystalline Barium Zirconium Titanate Synthesized by the Sonochemical Process

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.802.119 ◽

2013 ◽

Vol 802 ◽

pp. 119-123

Author(s):

Supamas Wirunchit ◽

Rangson Muanghlua ◽

Supamas Wirunchit ◽

Wanwilai Vittayakorn ◽

Naratip Vittayakorn

Keyword(s):

Crystal Structure ◽

Electron Microscopy ◽

Reaction Time ◽

Single Phase ◽

Zirconium Titanate ◽

X Ray Diffraction ◽

X Ray ◽

Large Particles ◽

Barium Zirconium Titanate ◽

Scanning Electron

Nanocrystalline barium zirconium titanate, BaZr0.4Ti0.6O3, was synthesized successfully via the sonochemical process. The effects of reaction time on the precipitation of Ba(Zr,Ti)O3 particles were investigated briefly. The crystal structure as well as molecular vibrations and morphology were investigated. X-ray diffraction indicated that the powders exhibited a single phase perovskite structure, without the presence of pyrochlore or unwanted phases at the reaction time of 60 min. Nanocrystals were formed before being oriented and aggregated into large particles in aqueous solution under ultrasonic irradiation. A scanning electron microscopy (SEM) photograph showed the BZT powder as spherical in shape with uniform nanosized features.

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Characterization of Zn0.96Al0.02Ga0.02O Thermoelectric Material

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.802.227 ◽

2013 ◽

Vol 802 ◽

pp. 227-231

Author(s):

Panida Pilasuta ◽

Pennapa Muthitamongkol ◽

Chanchana Thanachayanont ◽

Tosawat Seetawan

Keyword(s):

Crystal Structure ◽

Electron Microscopy ◽

Single Phase ◽

Hexagonal Structure ◽

Hexagonal Crystal Structure ◽

X Ray Diffraction ◽

Hexagonal Crystal ◽

X Ray ◽

Transmission Electron

Crystal structure of Zn0.96Al0.02Ga0.02O was analyzed by X-Ray diffraction (XRD) technique and the microstructure was observed by scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The XRD results showed single phase and hexagonal structure a = b = 3.24982 Å, and c = 5.20661 Å. The SEM and TEM results showed the grain size of material arrangement changed after sintering and TEM diffraction pattern confirmed hexagonal crystal structure of Zn0.96Al0.02Ga0.02O after sintering.

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NEUTRON DIFFRACTION STUDY ON (Bi−Pb)2Sr2Ca2Cu3O10

Modern Physics Letters B ◽

10.1142/s0217984990000970 ◽

1990 ◽

Vol 04 (12) ◽

pp. 791-794 ◽

Cited By ~ 4

Author(s):

YANG JI-LIAN ◽

YE CHUN-TANG ◽

ZHANG BAI-SHENG ◽

LI JI-ZHOU ◽

KANG JIAN ◽

...

Keyword(s):

Crystal Structure ◽

Neutron Diffraction ◽

Diffraction Study ◽

Single Phase ◽

Polycrystalline Sample ◽

Neutron Diffraction Study ◽

Structure Study ◽

X Ray Diffraction ◽

Space Group ◽

X Ray

The polycrystalline sample of (Bi–Pb)2Sr2Ca2Cu3O10 with Tc=107 K was prepared. The X-ray diffraction proved that the sample is single phase. The crystal structure study on the sample has been carried out by neutron diffraction. The result shows that its structure is tetragonal body-centre structure with space group of I4/mmm, containing a few oxygen atoms at 4e site in Bi–Pb layers.

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Surface Singularity Upon Solar Radiation Heating of Graphite/Tungsten Powder Mixture Compacts to Temperatures in Excess of 1600°C

Materials Science Forum ◽

10.4028/www.scientific.net/msf.587-588.993 ◽

2008 ◽

Vol 587-588 ◽

pp. 993-997 ◽

Cited By ~ 4

Author(s):

Fernando A. Costa Oliveira ◽

Bernard Granier ◽

J.M. Badie ◽

Jorge Cruz Fernandes ◽

Luís Guerra Rosa ◽

...

Keyword(s):

Single Phase ◽

Tungsten Powder ◽

Argon Atmosphere ◽

Solar Furnace ◽

Target Temperature ◽

X Ray Diffraction ◽

Radiation Heating ◽

Bulk Specimen ◽

Atom Ratio ◽

X Ray

Synthesis of single-phase tungsten sub-carbide W2C was attempted by heating pellets made out of a source of carbon (graphite-G) and W powders with G/W atom ratio between 0.35 and 0.50 to two target temperatures, namely 1600°C and 1900°C in an argon atmosphere using a solar furnace at PROMES-CNRS in Odeillo (France). The results showed that synthesis of single-phase W2C phase was difficult at either target temperature yielding the W2C co-existed with free metallic W. It was noted that the thin top surface layer of the solar-synthesised tungsten carbide pellets heated to 1900°C was distinguishable from the rest of the bulk specimen showing localised growth of nano-meter scale WC whiskers over W2C grains. Detailed XRD (X-ray diffraction) results on the effect of both G/W ratio and temperature on W2C lattice parameters are discussed.

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Crystal Structure of BiFeO3 Synthesized Using the Hydrothermal Processing

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.602-603.947 ◽

2014 ◽

Vol 602-603 ◽

pp. 947-950

Author(s):

Zhen Wang ◽

Hai Yan Chen ◽

Lin Qiang Gao ◽

Xin Zou

Keyword(s):

Crystal Structure ◽

Electron Microscopy ◽

Thermal Analysis ◽

Scanning Electron Microscopy ◽

Single Phase ◽

Hydrothermal Processing ◽

Optimal Conditions ◽

X Ray Diffraction ◽

X Ray ◽

Scanning Electron

BiFeO3 nanoparticles were successfully synthesized by a hydrothermal method by a mineralizer (KNO3). Structural characterization was performed by thermal analysis, powder X-ray diffraction (XRD) and scanning electron microscopy (TEM).The results showed that the products were perovskite structure BiFeO3 powders. Optimal conditions for the synthesis of single-phase BiFeO3 ceramics were obtained.

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FABRICATION AND CHARACTERISTICS OF ALN NANOWIRES

Modern Physics Letters B ◽

10.1142/s0217984901003068 ◽

2001 ◽

Vol 15 (30) ◽

pp. 1455-1458 ◽

Cited By ~ 8

Author(s):

H. CHEN ◽

X. K. LU ◽

S. Q. ZHOU ◽

X. H. HAO ◽

Z. X. WANG

Keyword(s):

Crystal Structure ◽

Electron Microscopy ◽

Transmission Electron Microscopy ◽

Single Phase ◽

X Ray Diffraction ◽

X Ray ◽

Selected Area Electron Diffraction ◽

Transmission Electron ◽

Sublimation Method ◽

Scanning Electron

Single phase AlN nanowires are fabricated by a sublimation method. They were characterized by means of X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), typical selected area electron diffraction (SAED) and high-resolution transmission electron microscopy (HRTEM). The SEM and TEM images show that most of the nanowires have diameters of about 10–60 nm. The crystal structure of AlN nanowires revealed by XRD, SAED and HRTEM shows the AlN nanowires have a wurtzite structure.

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Synthesis, Structure and Thermophysical Properties of Phosphates MNi0.5Zr1.5(PO4)3 (M = Mg, Ca, Sr)

Eurasian Chemico-Technological Journal ◽

10.18321/ectj51 ◽

2010 ◽

Vol 12 (3,4) ◽

pp. 241 ◽

Cited By ~ 7

Author(s):

M.V. Sukhanov ◽

I.A. Schelokov ◽

V.I. Pet'kov ◽

E.R. Gobechiya ◽

Yu.K. Kabalov ◽

...

Keyword(s):

Crystal Structure ◽

Heat Capacity ◽

Thermal Expansion ◽

High Temperature ◽

Single Phase ◽

Rietveld Method ◽

Type Structure ◽

X Ray Diffraction ◽

X Ray ◽

Expansion Behavior

New phosphates MNi0.5Zr1.5(PO4)3 (M = Mg, Ca, Sr) were prepared by the precipitating method. Phosphates were characterized using X-ray powder diffraction, IR-spectroscopy and electron microprobe analyses. The crystal structure of phosphates was refined by the Rietveld method. Phosphates CaNi0.5Zr1.5(PO4)3 and SrNi0.5Zr1.5(PO4)3 are shown to have been crystallized in the NaZr2(PO4)3-type structure and the phosphate MgNi0.5Zr1.5(PO4)3 was obtained as a single-phase with Sc2(WO4)3-type structure. Heat capacity of phosphate CaNi0.5Zr1.5(PO4)3 was measured in the range 7 – 650 K and increased monotonically over the entire temperature range studied. Thermal expansion of phosphate CaNi0.5Zr1.5(PO4)3 was studied in the interval 295-1073 K by the high temperature X-ray diffraction. This phosphate is similar to the best low-expansion ceramics, such as zircon, cordierite and silica glass in thermal expansion behavior.

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Structural and magnetic properties of mechanochemically synthesized nanosized yttrium titanate

Hemijska industrija ◽

10.2298/hemind111103103b ◽

2012 ◽

Vol 66 (3) ◽

pp. 309-315 ◽

Cited By ~ 1

Author(s):

Tanja Barudzija ◽

Alexey Gusev ◽

Dragana Jugovic ◽

Milena Marinovic-Cincovic ◽

Miroslav Dramicanin ◽

...

Keyword(s):

Quantum Interference ◽

Single Phase ◽

High Energy ◽

Argon Atmosphere ◽

Molar Ratio ◽

Superconducting Quantum Interference Device ◽

X Ray Diffraction ◽

X Ray ◽

The Mean ◽

First Time

Nanosized perovskite YTiO3 with the mean crystallite size of 18 nm was synthesized for the first time by mechanochemical treatment. The mechanochemical solid state reaction between commercial Y2O3 powder and mechanochemically synthesized TiO powder in molar ratio 0.5:1 was completed for 3 h in a high-energy planetary ball mill in argon atmosphere. The heating in vacuum at 1150 ?C for 12 h transforms nanosized YTiO3 to a well-crystallized single-phase perovskite YTiO3. Both samples were characterized by X-ray diffraction (XRD) and thermogravimetric (TGA/DTA) analyses, as well as superconducting quantum interference device magnetometer (SQUID) measurements.

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Karakterisasi Struktur Kristal dan Sifat Magnetik Magnet Stronsium Ferit Pasir Besi Batang Sukam Kabupaten Sijunjung Sumatera Barat

Prosiding SNFA (Seminar Nasional Fisika dan Aplikasinya) ◽

10.20961/prosidingsnfa.v1i0.4500 ◽

2017 ◽

Vol 1 ◽

pp. 38

Author(s):

Arif Budiman ◽

Dwi Puryanti ◽

Sri Mulyadi Dt. Basa ◽

Muhammad Rizki ◽

Helfi Syukriani

Keyword(s):

Crystal Structure ◽

Magnetic Properties ◽

Magnetic Susceptibility ◽

Single Phase ◽

Oxidation Process ◽

Strontium Ferrite ◽

X Ray Diffraction ◽

Hexagonal Crystal ◽

X Ray

Abstract: The synthesis and characterization of the crystal structure and magnetic properties of strontium ferrite magnets (SrO.6Fe2O3) has been done. Hematite (Fe2O3) is synthesized from iron sand of Batang Sukam Sijunjung Sumatera Barat through the oxidation process by temperature 700ºC for 3.0 hours. Strontium carbonate (SrCO3) was obtained from Merck product with a purity of more than 99%. Synthesis of strontium ferrite magnets are made through a process of solid-solid mixing and sintering at a temperature of 1000ºC for 3.0 hours. The results of characterization of X-ray diffraction indicates that it has formed a single phase strontium ferrite magnets with a hexagonal crystal structure. The result of measurement of the magnetic properties shows that an average magnetic susceptibility of strontium ferrite magnet is 266.7 × 10-8 m3 /kg. Keywords: strontium ferrite magnet, iron sand, crystal structure and magnetic susceptibility. Abstrak: Telah dilakukan sintesis dan karakterisasi struktur kristal dan sifat magnetik magnet stronsium ferit (SrO.6Fe2O3). Hematit (Fe2O3) disintesis daripasir besi Batang Sukam Kabupaten Sijunjung Sumatera Barat melalui proses oksidasi dengan temperatur 700ºC selama 3,0 jam. Stronsium karbonat (SrCO3) diperoleh dari produk Merck dengan kemurnian lebih dari 99 %. Sintesis magnet stronsium ferit dibuat melalui proses solid-solid mixing dan disintering pada suhu 1000ºC selama 3,0 jam. Hasil karakterisasi difraksi sinar-X menunjukkan bahwa telah terbentuk single phase magnet stronsium ferit dengan struktur kristal heksagonal. Hasil pengukuran sifat magnet menunjukkan bahwa magnet stronsium ferit memiliki suseptibilitas magnetik rata-rata 266,7 × 10-8 m3/kg. Kata Kunci: magnet stronsium ferit, pasir besi, struktur kristal dan suseptibilitas magnetik.

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