Structural phase transitions and photoluminescence properties of Eu3+ doped Ca(2−x)BaxLaNbO6 phosphors

2015 ◽  
Vol 44 (42) ◽  
pp. 18536-18543 ◽  
Author(s):  
Jicheng Zhu ◽  
Zhiguo Xia ◽  
Yuanyuan Zhang ◽  
Maxim S. Molokeev ◽  
Quanlin Liu
Keyword(s):  
Crystal Structure ◽  
Phase Transitions ◽  
Structural Phase ◽  
Luminescence Properties ◽  
Structure Evolution ◽  
Structural Phase Transitions ◽  
Photoluminescence Properties

Crystal structure evolution and luminescence properties of Eu3+ doped Ca(2−x)BaxLaNbO6 phosphors have been discussed depending on the Ca/Ba substitutions.

scholarly journals Crystal structure and structural phase transitions in the GdBaCo2O5.0cobaltite

2011 ◽  
Vol 84 (10) ◽  
Author(s):  
Leonardo Lo Presti ◽  
Mattia Allieta ◽  
Marco Scavini ◽  
Paolo Ghigna ◽  
Laura Loconte ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Phase Transitions ◽  
Structural Phase ◽  
Structural Phase Transitions

scholarly journals Intercalation as a versatile tool for fabrication, property tuning, and phase transitions in 2D materials

2021 ◽  
Vol 5 (1) ◽  
Author(s):  
Manthila Rajapakse ◽  
Bhupendra Karki ◽  
Usman O. Abu ◽  
Sahar Pishgar ◽  
Md Rajib Khan Musa ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Phase Transitions ◽  
Recent Progress ◽  
2D Materials ◽  
Structural Phase ◽  
Two Dimensional ◽  
Structural Phase Transitions ◽  
Quantum Phases ◽  
Comprehensive Review ◽  
Versatile Tool

AbstractRecent advances in two-dimensional (2D) materials have led to the renewed interest in intercalation as a powerful fabrication and processing tool. Intercalation is an effective method of modifying the interlayer interactions, doping 2D materials, modifying their electronic structure or even converting them into starkly different new structures or phases. Herein, we discuss different methods of intercalation and provide a comprehensive review of various roles and applications of intercalation in next‐generation energy storage, optoelectronics, thermoelectrics, catalysis, etc. The recent progress in intercalation effects on crystal structure and structural phase transitions, including the emergence of quantum phases are also reviewed.

The high-pressure structural phase transitions of sodium bismuth titanate

2005 ◽  
Vol 220 (8) ◽  
Author(s):  
Pamela A. Thomas ◽  
Jens Kreisel ◽  
A. Michael Glazer ◽  
Pierre Bouvier ◽  
Quangzhong Jiang ◽  
...  
Keyword(s):  
Crystal Structure ◽  
High Pressure ◽  
Phase Transitions ◽  
Bismuth Titanate ◽  
Structural Phase ◽  
Structural Phase Transitions ◽  
Sodium Bismuth Titanate

AbstractThe crystal structure of sodium bismuth titanate, Na

Iodine NQR and Phase Transitions in [N(CH3)4]2 ZnI4

1990 ◽  
Vol 45 (3-4) ◽  
pp. 349-352 ◽  
Author(s):  
J. Pirnat ◽  
J. Lužnik ◽  
Z. Trontelj
Keyword(s):  
Crystal Structure ◽  
Phase Transitions ◽  
High Temperature ◽  
Temperature Dependence ◽  
General Formula ◽  
Structural Phase ◽  
Structural Phase Transitions ◽  
Space Group ◽  
Crystal Space ◽  
Group D

Abstract Using a superregenerative NQR spectrometer, the temperature dependence of 127I NQR spectra in [N(CH3)4]2ZnI4 was measured between 167 and 335 K. The measurements confirm two known structural phase transitions at 219 and 257.5 K. The correspondence between the distinct regions of iodine NQR spectra and the crystal structure is discussed. The relation of [N(CH3)4]2ZnI4 to the incommensurate family with the general formula X2YZ4 and the high temperature (paraphase) crystal space group D162h (Pmcn) is studied.

scholarly journals Peculiarities of the Crystal Structure Evolution of BiFeO3–BaTiO3 Ceramics across Structural Phase Transitions

Nanomaterials ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. 801 ◽  
Author(s):  
Dmitry V. Karpinsky ◽  
Maxim V. Silibin ◽  
Sergei V. Trukhanov ◽  
Alex V. Trukhanov ◽  
Alexander L. Zhaludkevich ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Phase Transitions ◽  
Phase Boundary ◽  
Structural Parameters ◽  
Structural Phase ◽  
Rhombohedral Phase ◽  
Phase Evolution ◽  
Structure Evolution ◽  
Cubic Phase ◽  
Scanning Calorimetry

Evolution of the crystal structure of ceramics BiFeO3–BaTiO3 across the morphotropic phase boundary was analyzed using the results of macroscopic measuring techniques such as X-ray diffraction, differential scanning calorimetry, and differential thermal analysis, as well as the data obtained by local scale methods of scanning probe microscopy. The obtained results allowed to specify the concentration and temperature regions of the single phase and phase coexistent regions as well as to clarify a modification of the structural parameters across the rhombohedral–cubic phase boundary. The structural data show unexpected strengthening of structural distortion specific for the rhombohedral phase, which occurs upon dopant concentration and temperature-driven phase transitions to the cubic phase. The obtained results point to the non-monotonous character of the phase evolution, which is specific for metastable phases. The compounds with metastable structural state are characterized by enhanced sensitivity to external stimuli, which significantly expands the perspectives of their particular use.

scholarly journals Simulation of structural phase transitions by metadynamics

2005 ◽  
Vol 220 (5/6) ◽  
Author(s):  
Roman Martoňák ◽  
Alessandro Laio ◽  
Marco Bernasconi ◽  
Chiara Ceriani ◽  
Paolo Raiteri ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Phase Transitions ◽  
Structure Prediction ◽  
Structural Phase ◽  
New Method ◽  
Crystal Structure Prediction ◽  
Structural Transitions ◽  
Structural Phase Transitions

AbstractWe describe here in detail the recently introduced methodology for simulation of structural transitions in crystals. The applications of the new scheme are illus trated on various kinds of crystals and the advantages with respect to previous schemes are emphasized. The relevance of the new method for the problem of crystal structure prediction is also discussed.

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