scholarly journals High-temperature poling treatment of congruent ferroelectric LiNb0.5Ta0.5O3 solid solution single crystals

2021 ◽  
Vol 7 (1) ◽  
pp. 17-20
Author(s):  
Anatolii A. Mololkin ◽  
Dmitry V. Roshchupkin ◽  
Eugenii V. Emelin ◽  
Rashid R. Fahrtdinov
Keyword(s):  
Solid Solution ◽  
High Temperature ◽  
Lithium Niobate ◽  
Curie Temperature ◽  
Physical Properties ◽  
Single Crystals ◽  
Thermal Instability ◽  
Poling Process ◽  
Lithium Niobate Crystals ◽  
Piezoelectric Constants

Lithium niobate and tantalate are among the most important and widely used materials of acoustooptics and acoustoelectronics. They have high piezoelectric constants enabling their use as actuators. Their use is however restricted by the thermal instability of lithium niobate crystals and the low Curie temperature TC of lithium tantalate crystals. Overcoming these drawbacks typical of some compounds is possible by growing LiNb1-xTaxO3 single crystals. Good quality LiNb1-xTaxO3 single crystals have been grown using the Czochralsky technique. High-temperature poling process of LiNb1-xTaxO3 single crystals has been studied. The main differences between the process modes required for poling of congruent LiNb1-xTaxO3 single crystals and congruent LiNbO3 single crystals have been demonstrated. Parameters of high-temperature electric diffusion processing of LiNb1-xTaxO3 single crystals that provide for singledomain crystals for further study of physical properties have been reported.

scholarly journals Properties of high-temperature poling ferroelectric crystals congruent solid solution LiNb0.5Ta0.5O3

2021 ◽  
Vol 24 (1) ◽  
pp. 34-39
Author(s):  
A. A. Mololkin ◽  
D. V. Roshchupkin ◽  
E. E. Emelin ◽  
R. R. Fahrtdinov
Keyword(s):  
Solid Solution ◽  
High Temperature ◽  
Lithium Niobate ◽  
Curie Temperature ◽  
Comparative Studies ◽  
Thermal Instability ◽  
Lithium Niobate Crystal ◽  
Czochralski Method ◽  
Lithium Tantalate ◽  
Piezoelectric Constants

Lithium niobate and lithium tantalate are among the most important and most widely used materials in acousto-optics and acoustoelectronics. These materials have high values of piezoelectric constants, which makes it possible to use these materials as actuators; however, their use is limited by the thermal instability of a lithium niobate crystal and the low Curie temperature (TC) of a lithium tantalate crystal. LiNb(1-x)TaxO3 crystals have to overcome the aforementioned limitations of individual compounds.Crystals LiNb0.5Ta0.5O3 were grown by the Czochralski method, of good quality. Comparative studies of the features of high-temperature single domainization of LiNb0.5Ta0.5O3 crystals have been carried out. The main differences in the technological regimes for single-domainization of congruent LiNb0.5Ta0.5O3 crystals from congruent LiNbO3 crystals are demonstrated. The parameters of high-temperature electrodiffusion processing LiNb0.5Ta0.5O3 crystals are presented, which make it possible to obtain single-domain crystals for further study of their physical properties.

INCONEL ALLOY 601

Alloy Digest ◽  
1970 ◽  
Vol 19 (4) ◽  
Keyword(s):  
Solid Solution ◽  
Fracture Toughness ◽  
Corrosion Resistance ◽  
High Temperature ◽  
Physical Properties ◽  
Heat Treating ◽  
Solid Solution Alloy ◽  
Process Industries ◽  
Inconel Alloy ◽  
Nickel Chromium

Abstract INCONEL Alloy 601 is a nickel-chromium solid-solution alloy with excellent high-temperature properties which make it attractive for many application in aerospace and process industries. This datasheet provides information on composition, physical properties, elasticity, and tensile properties as well as fracture toughness and creep. It also includes information on corrosion resistance as well as forming, heat treating, machining, joining, and surface treatment. Filing Code: Ni-152. Producer or source: Huntington Alloy Products Division, An INCO Company.

STOODY 4

Alloy Digest ◽  
1977 ◽  
Vol 26 (4) ◽  
Keyword(s):  
Solid Solution ◽  
Compressive Strength ◽  
Corrosion Resistance ◽  
High Temperature ◽  
Physical Properties ◽  
Heat Treating ◽  
Tungsten Alloy ◽  
High Temperature Strength ◽  
Cobalt Chromium ◽  
Temperature Performance

Abstract STOODY 4 is a cobalt-chromium-tungsten alloy with excellent high-temperature strength and excellent resistance to corrosion. This alloy derives its high-temperature strength from the high tungsten-to-carbon ratio which allows a large percentage of tungsten to remain in solid solution. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and compressive strength. It also includes information on high temperature performance and corrosion resistance as well as heat treating, machining, and joining. Filing Code: Co-75. Producer or source: WRAP Division, Stoody Company.

PYROMET 538

Alloy Digest ◽  
1970 ◽  
Vol 19 (12) ◽  
Keyword(s):  
Solid Solution ◽  
Corrosion Resistance ◽  
High Temperature ◽  
Physical Properties ◽  
Tensile Properties ◽  
Oxidation Resistance ◽  
Heat Treating ◽  
Temperature Performance ◽  
Technology Corporation ◽  
Carpenter Technology Corporation

Abstract PYROMET 538 is a solid-solution strengthened, austenitic alloy with a desirable combination of strength, corrosion resistance, oxidation resistance, and economy. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as creep. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: SS-247. Producer or source: Carpenter Technology Corporation.

Structural Features of Nominally Pure Lithium Niobate Crystals Grown from Boron-Doped Charge

2020 ◽  
Vol 312 ◽  
pp. 128-133
Author(s):  
Nikolay Sidorov ◽  
Roman Titov ◽  
Natalya A. Teplyakova ◽  
Mikhail Palatnikov ◽  
Alexander Vjacheslavovich Syuy
Keyword(s):  
Crystal Structure ◽  
Lithium Niobate ◽  
Single Crystals ◽  
Czochralski Method ◽  
Structural Features ◽  
Structural Defects ◽  
Cation Sublattice ◽  
Structural Units ◽  
Boron Doped ◽  
Lithium Niobate Crystals

The features of the structure of single crystals LiNbO3:B3+ (0.12 and 0.18 wt %) grown by the Czochralski method from the mixture of different genesis were studied. It was found that boron is able to incorporate into the crystal structure of lithium niobate in a trace amounts (~ 10–4–10–5 wt %), decreasing the concentration of structural defects NbLi. Thus, ordering of structural units of the cation sublattice of lithium niobate crystals grown from a congruent composition melt approach in that of stoichiometric crystals.

Coloring Changes of Congruent LiNbO3 Crystals under Redox Annealing

2015 ◽  
Vol 230 ◽  
pp. 228-232 ◽  
Author(s):  
Dmytro Yu. Sugak
Keyword(s):  
High Temperature ◽  
Lithium Niobate ◽  
Structural Properties ◽  
High Temperature Annealing ◽  
Lithium Niobate Crystals ◽  
Congruent Lithium Niobate

The paper is to discuss the main characteristics of the influence of high temperature annealing in different gas environments on the optical and structural properties of congruent lithium niobate crystals.

Physical properties and phase transitions of bis(guanidinium)zirconium bis(nitrilotriacetate)hydrate, [C(NH2)3]2Zr[N(CH2COO)3]2 · H2O

1997 ◽  
Vol 212 (11) ◽  
Author(s):  
E. Haussühl ◽  
E. Tillmanns
Keyword(s):  
Thermal Expansion ◽  
Phase Transitions ◽  
Physical Properties ◽  
Single Crystals ◽  
Optical Quality ◽  
Refractive Indices ◽  
Strong Anisotropy ◽  
Ultrasonic Methods ◽  
Piezoelectric Constants

AbstractLarge single crystals of optical quality of bis(guanidinium)zirconium bis(nitrilotriacetate)hydrate have been grown from aqueous solutions. Complete elastic, thermoelastic and piezoelastic tensors have been determined by ultrasonic methods. In addition, the tensor of thermal expansion, refractive indices, dielectric and piezoelectric constants have been studied in the range between 210 K and 330 K. Most physical properties investigated show a strong anisotropy. The piezoelectric constant

Effect of TiO2 on Mechanical Properties and Microstructure of Magnesium Aluminate Spinel Refractories

2011 ◽  
Vol 284-286 ◽  
pp. 638-641
Author(s):  
Jun Cong Wei ◽  
Xiao Cui Han ◽  
Chun Hui Gao ◽  
Jian Kun Huang ◽  
Jun Bo Tu
Keyword(s):  
Mechanical Properties ◽  
Solid Solution ◽  
Titanium Dioxide ◽  
Phase Composition ◽  
High Temperature ◽  
Physical Properties ◽  
Room Temperature ◽  
Magnesium Aluminate ◽  
Magnesium Aluminate Spinel

MgO-Al2O3-TiO2 composite refractories were prepared by using magnesium aluminate spinel (MgAl2O4) and titanium dioxide as main starting materials and being sintered at high temperature. The influences of titanium dioxide additions on the room temperature physical properties, phase composition and microstructure were investigated. The phase composition and microstructure were tested by means of XRD and SEM. The results revealed that with increasing TiO2 content, the densification of the composites first increased sand then decreased and maximized at 4% TiO2 loading. This showed appropriate amount of TiO2 could contribute to the sintering of the composites due to the solid solution of TiO2 in magnesium aluminate spinel.

HAYNES HR-160 ALLOY

Alloy Digest ◽  
1991 ◽  
Vol 40 (12) ◽  
Keyword(s):  
Solid Solution ◽  
High Temperature ◽  
Physical Properties ◽  
Tensile Properties ◽  
Heat Treating ◽  
High Temperature Corrosion ◽  
Temperature Performance

Abstract HAYNES HR-160 alloy is a solid-solution-strengthened alloy with outstanding resistance to most forms of high-temperature corrosion. This datasheet provides information on composition, physical properties, elasticity, and tensile properties as well as creep. It also includes information on high temperature performance as well as forming, heat treating, and joining. Filing Code: Ni-396. Producer or source: Haynes International Inc..

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