scholarly journals Local probe of irradiation-induced structural changes and orbital magnetism in Fe60Al40 thin films via an order-disorder phase transition

2018 ◽  
Vol 98 (2) ◽  
Author(s):  
Enrico La Torre ◽  
Alevtina Smekhova ◽  
Carolin Schmitz-Antoniak ◽  
Katharina Ollefs ◽  
Benedikt Eggert ◽  
...  
Keyword(s):  
Thin Films ◽  
Phase Transition ◽  
Structural Changes ◽  
Disorder Phase Transition ◽  
Orbital Magnetism

Solid-phase reactions, self-propagating high-temperature synthesis, and order-disorder phase transition in thin films

JETP Letters ◽  
2000 ◽  
Vol 71 (5) ◽  
pp. 183-186 ◽  
Author(s):  
V. G. Myagkov ◽  
L. E. Bykova ◽  
G. N. Bondarenko ◽  
V. S. Zhigalov ◽  
A. I. Pol’skii ◽  
...  
Keyword(s):  
Thin Films ◽  
Phase Transition ◽  
High Temperature ◽  
Solid Phase ◽  
Temperature Synthesis ◽  
Disorder Phase Transition ◽  
High Temperature Synthesis ◽  
Solid Phase Reactions

Transport properties of CZTS thin films: effect of Cu-Zn disorder

2021 ◽  
Author(s):  
Eleonora Isotta ◽  
Ubaidah Syafiq ◽  
Narges Ataollahi ◽  
Andrea Chiappini ◽  
Claudia Malerba ◽  
...  
Keyword(s):  
Thin Films ◽  
Phase Transition ◽  
Low Temperature ◽  
Transport Properties ◽  
Disorder Phase Transition ◽  
Czts Thin Films

Cu-Zn disorder is known to deeply affect kesterite (Cu2ZnSnS4, CZTS) due to the low temperature order-disorder phase transition, leading to a random occupation of the two cations in the shared...

Pressure-Induced Order–Disorder Phase Transition of Spinel Single Crystals

1998 ◽  
Vol 54 (6) ◽  
pp. 714-721 ◽  
Author(s):  
J. Wittlinger ◽  
S. Werner ◽  
H. Schulz
Keyword(s):  
Crystal Structure ◽  
Phase Transition ◽  
Single Crystal ◽  
Structural Changes ◽  
X Ray ◽  
Disorder Phase Transition ◽  
X Ray Scattering ◽  
Structure Investigations ◽  
Pressure Phase ◽  
Oxygen Framework

The present study deals with single-crystal structure investigations by means of X-ray scattering of a pressure-induced phase transition of Mg0.4Al2.4O4. The compressibility of the substance is very small, whereas the structural changes are surprisingly high. A non-identified high-pressure phase turns out to be reversible considering the existence of a spinel single crystal, but not reversible with regard to the ordering of the cations in the oxygen framework. The pressure-induced disordering of the cations is preserved on abrupt pressure decrease and can be detected in a recovered specimen.

scholarly journals Mechanism of Unusual Isosymmetric Order-Disorder Phase Transition in [Dimethylhydrazinium]Mn(HCOO)3 Hybrid Perovskite Probed by Vibrational Spectroscopy

Materials ◽  
2021 ◽  
Vol 14 (14) ◽  
pp. 3984
Author(s):  
Jan Albert Zienkiewicz ◽  
Edyta Kucharska ◽  
Maciej Ptak
Keyword(s):  
Phase Transition ◽  
Density Functional ◽  
Structural Changes ◽  
Group Analysis ◽  
Complex Nature ◽  
Disorder Phase Transition ◽  
Hybrid Perovskite ◽  
First Order Phase Transition ◽  
The Density Functional Theory ◽  
First Order Phase

[DMHy]Mn(HCOO)3 (DMHy+ = dimethylhydrazinium cation) is an example of an organic–inorganic hybrid adopting perovskite-like architecture with the largest organic cation used so far in the synthesis of formate-based hybrids. This compound undergoes an unusual isosymmetric phase transition at 240 K on heating. The mechanism of this phase transition has a complex nature and is mainly driven by the ordering of DMHy+ cations and accompanied by a significant distortion of the metal–formate framework in the low temperature (LT) phase. In this work, the Density Functional Theory (DFT) calculations and factor group analysis are combined with experimental temperature-dependent IR and Raman studies to unequivocally assign the observed vibrational modes and shed light on the details of the occurring structural changes. The spectroscopic data show that this first-order phase transition has a highly dynamic nature, which is a result of balanced interplay combining re-arrangement of the hydrogen bonds and ordering of DMHy+ cations. The tight confinement of organic cations forces simultaneous steric deformation of formate ions and the MnO6 octahedra.

Solid-phase reactions and the order-disorder phase transition in thin films

2001 ◽  
Vol 46 (6) ◽  
pp. 743-748
Author(s):  
V. G. Myagkov ◽  
L. E. Bykova ◽  
G. N. Bondarenko ◽  
G. V. Bondarenko ◽  
F. V. Myagkov
Keyword(s):  
Thin Films ◽  
Phase Transition ◽  
Solid Phase ◽  
Disorder Phase Transition ◽  
Solid Phase Reactions

Order-disorder phase transition in CoPd thin films

JETP Letters ◽  
2008 ◽  
Vol 86 (11) ◽  
pp. 727-729
Author(s):  
E. M. Artem’ev ◽  
M. E. Artem’ev
Keyword(s):  
Thin Films ◽  
Phase Transition ◽  
Disorder Phase Transition

Effect of Crystalline Structure and Impurity Content of C60 Thin Films on the Order/Disorder Phase Transition

2001 ◽  
Vol 675 ◽  
Author(s):  
Eugene A. Katz ◽  
David Faiman ◽  
Svetlana Shtutina ◽  
Aleksandra P. Isakina ◽  
Konstantin A. Yagotintsev
Keyword(s):  
Thin Films ◽  
Phase Transition ◽  
Transition Temperature ◽  
Oxygen Content ◽  
Crystalline Structure ◽  
Impurity Content ◽  
Lattice Parameter ◽  
Disorder Phase Transition ◽  
Grain Sizes ◽  
First Order Phase Transition

ABSTRACTNear the temperature of 260 K, C60 crystal is known to undergo a first order phase transition, associated with changes in molecular rotations. The present paper reports the effect of the crystalline structure and impurity content of C60 thin films on their structural behavior near this phase transition. Polycrystalline C60 films with different grain sizes and oxygen content were obtained by varying the conditions of their vacuum deposition and post-grown exposure. Temperature-resolved X-ray diffraction in the range 300 – 15 K was used to determine the lattice parameter and its changes near the phase transition temperature. Decrease in grain sizes and increase in oxygen content of the films are found to lead to a gradual reduction in the discontinuity in lattice parameter and the transition temperature.

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