Thermal expansion of single crystal Gd/sub 5/(Si/sub 2/Ge/sub 2/) showing unusual first-order phase transformation

Dilatometry, high-temperature x-ray diffraction, differential thermal analysis, and differential scanning calorirmetry have been performed on LaGaO3, NdGaO3, PrGaO3, SmAlO3, and LaAlO3 single crystals grown by the Czochralski technique. First order phase transitions have been located at 145°C for LaGaO3 and 785°C for SmAlO3, and ΔH has been measured for the LaGaO3 transition. Second order transitions have been identified for LaGaO3, PrGaO3, NdGaO3, and LaAlO3. The usefulness of these compounds as substrates for high temperature superconducting films is discussed in terms of thermal expansion matching.

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Reversible crystal deformation of a single-crystal host of copper(ii) 1-naphthoate—pyrazine through crystal phase transition induced by methanol vapor sorption

Chemical Communications ◽

10.1039/c4cc09948f ◽

2015 ◽

Vol 51 (24) ◽

pp. 5024-5027 ◽

Cited By ~ 5

Author(s):

Yuichi Takasaki ◽

Satoshi Takamizawa

Keyword(s):

Phase Transition ◽

Single Crystal ◽

Order Phase Transition ◽

Crystal Phase ◽

Vapor Sorption ◽

Methanol Vapor ◽

First Order ◽

First Order Phase Transition ◽

Crystal Phase Transition ◽

First Order Phase

A single-crystal host of copper(ii) 1-naphthoate—pyrazine reversibly deformed during the first-order phase transition induced by methanol vapor desorption and adsorption.

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First-order phase transformation and structural studies in Se85In15−xZnx chalcogenide glasses

Journal of Thermal Analysis and Calorimetry ◽

10.1007/s10973-017-6273-9 ◽

2017 ◽

Vol 129 (3) ◽

pp. 1435-1444 ◽

Cited By ~ 3

Author(s):

Archana Srivastava ◽

S. N. Tiwari ◽

A. N. Upadhyay ◽

M. Zulfequar ◽

Shamshad A. Khan

Keyword(s):

Phase Transformation ◽

Chalcogenide Glasses ◽

Structural Studies ◽

First Order ◽

First Order Phase

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Growth rate at first-order phase transformation processes in multicomponent systems

Journal of Crystal Growth ◽

10.1016/j.jcrysgro.2004.11.410 ◽

2005 ◽

Vol 276 (3-4) ◽

pp. 643-651 ◽

Cited By ~ 3

Author(s):

L. Anestiev ◽

D. Malakhov

Keyword(s):

Growth Rate ◽

Phase Transformation ◽

Multicomponent Systems ◽

First Order ◽

First Order Phase ◽

Transformation Processes

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Magnetic First‐Order Phase Transition and Anisotropy in Single‐Crystal MnAs

Journal of Applied Physics ◽

10.1063/1.1729387 ◽

1963 ◽

Vol 34 (4) ◽

pp. 1101-1103 ◽

Cited By ~ 29

Author(s):

R. W. De Blois ◽

D. S. Rodbell

Keyword(s):

Phase Transition ◽

Single Crystal ◽

Order Phase Transition ◽

First Order ◽

First Order Phase Transition ◽

First Order Phase

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Two-phase equilibrium states in individual Cu–Ni nanoparticles: size, depletion and hysteresis effects

Beilstein Journal of Nanotechnology ◽

10.3762/bjnano.6.185 ◽

2015 ◽

Vol 6 ◽

pp. 1811-1820 ◽

Cited By ~ 11

Author(s):

Aram S Shirinyan

Keyword(s):

Phase Diagram ◽

Phase Transformation ◽

Phase Equilibrium ◽

Size Effects ◽

Solubility Diagram ◽

Two Phase ◽

Nanoscale Systems ◽

First Order ◽

Size Dependent ◽

First Order Phase

In isolated bimetallic nanoscale systems the limit amount of matter and surface-induced size effects can change the thermodynamics of first-order phase transformation. In this paper we present theoretical modification of Gibbs free energy concept describing first-order phase transformation of binary alloyed nanoparticles taking into account size effects as well as depletion and hysteresis effects. In such a way the hysteresis in a form of nonsymmetry for forth and back transforming paths takes place; compositional splitting and the loops-like splitted path on the size dependent temperature–composition phase diagram occur. Our calculations for individual Cu–Ni nanoparticle show that one must differentiate the solubility curves and the equilibrium loops (discussed here in term of solidification and melting loops). For the first time we have calculated and present here on the temperature–composition phase diagram the nanomelting loop at the size of 80 nm and the nanosolidification loop at the size of 25 nm for an individual Cu–Ni nanoparticle. So we observe the difference between the size-dependent phase diagram and solubility diagram, between two-phase equilibrium curves and solubility curves; also intersection of nanoliquidus and nanosolidus is available. These findings lead to the necessity to reconsider such basic concepts in materials science as phase diagram and solubility diagram.

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