The effect of phase separation on the temperature dependent magnetoresistance in perovskite oxide heterojunction

2008 ◽  
Vol 93 (16) ◽  
pp. 162106 ◽  
Author(s):  
Chun-lian Hu ◽  
Kui-juan Jin ◽  
Peng Han ◽  
Hui-bin Lu ◽  
Leng Liao ◽  
...  
Keyword(s):  
Phase Separation ◽  
Perovskite Oxide ◽  
Temperature Dependent

Strongly coupled thermal and chemical expansion in the perovskite oxide system Sr(Ti,Fe)O3−α

2015 ◽  
Vol 3 (7) ◽  
pp. 3602-3611 ◽  
Author(s):  
Nicola H. Perry ◽  
Jae Jin Kim ◽  
Sean R. Bishop ◽  
Harry L. Tuller
Keyword(s):  
Energy Conversion ◽  
Oxide System ◽  
Perovskite Oxide ◽  
Oxygen Stoichiometry ◽  
Temperature Dependent ◽  
Chemical Expansion ◽  
Strongly Coupled ◽  
Expansion Coefficients ◽  
Energy Conversion Devices ◽  
First Time

To evaluate stability in energy conversion devices, thermal and chemical expansion coefficients (CTE, CCE) of Sr(Ti,Fe)O3−α were measured and deconvoluted for the first time, revealing an oxygen stoichiometry-dependent CTE and temperature-dependent CCE.

"Double-W-shaped" temperature dependence of emission linewidth in an InGaN/GaN multiple quantum well structure with intense phase separation

2020 ◽  
Vol 10 (1) ◽  
pp. 140-144
Author(s):  
Changfu Li ◽  
Mingsheng Xu ◽  
Ziwu Ji ◽  
Kaiju Shi ◽  
Hongbin Li ◽  
...  
Keyword(s):  
Phase Separation ◽  
Temperature Dependence ◽  
Multiple Quantum Well ◽  
Excitation Power ◽  
Multiple Quantum ◽  
Temperature Dependent ◽  
Two Phase ◽  
Phase Structures ◽  
Temperature Dependences ◽  
Lower Excitation

The temperature dependence of the spectra of photoluminescence (PL) from a blue InGaN/GaN multiplequantum-well (MQW) structure is investigated at lower excitation power. Two emission peaks, related to InGaN and assigned to In-rich quasi-quantum dots (QDs) and InGaN-matrix in the full PL spectrum, were observed. Upon increasing the temperature, both PL peak linewidths exhibited "double-W-shaped" (narrowing–broadening–narrowing–broadening–narrowing–broadening) temperature dependence. Combined with the observed features of the temperature dependences of the PL intensities, the temperature-dependent behaviors in this case can be interpreted as the relaxation and thermalization of carriers inside respective phase structures and the transfer of carriers between two phase structures, because of the strong phase separation and significant component fluctuation in the InGaN well layers.

Temperature dependent phase separation in the Emery model

1992 ◽  
Vol T45 ◽  
pp. 88-90 ◽  
Author(s):  
K Dichtel ◽  
J Carstensen
Keyword(s):  
Phase Separation ◽  
Temperature Dependent ◽  
Emery Model

Temperature-dependent fatigue behaviors of ferroelectric ABO3-type and layered perovskite oxide thin films

2004 ◽  
Vol 84 (17) ◽  
pp. 3352-3354 ◽  
Author(s):  
G. L. Yuan ◽  
J.-M. Liu ◽  
Y. P. Wang ◽  
D. Wu ◽  
S. T. Zhang ◽  
...  
Keyword(s):  
Thin Films ◽  
Perovskite Oxide ◽  
Layered Perovskite ◽  
Oxide Thin Films ◽  
Temperature Dependent ◽  
Perovskite Oxide Thin Films

scholarly journals Design of intrinsically disordered proteins that undergo phase transitions with lower critical solution temperatures

2020 ◽  
Author(s):  
Xiangze Zeng ◽  
Chengwen Liu ◽  
Martin J. Fossat ◽  
Pengyu Ren ◽  
Ashutosh Chilkoti ◽  
...  
Keyword(s):  
Phase Separation ◽  
Phase Behavior ◽  
Intrinsically Disordered Proteins ◽  
Disordered Proteins ◽  
Temperature Dependent ◽  
Intrinsically Disordered ◽  
Implicit Solvation Model ◽  
Theta Temperature ◽  
Behavior Systems ◽  
Critical Solution Temperatures

AbstractMany naturally occurring elastomers are intrinsically disordered proteins (IDPs) built up of repeating units and they can demonstrate two types of thermoresponsive phase behavior. Systems characterized by lower critical solution temperatures (LCST) undergo phase separation above the LCST whereas systems characterized by upper critical solution temperatures (UCST) undergo phase separation below the UCST. There is congruence between thermoresponsive coil-globule transitions and phase behavior whereby the theta temperatures above or below which the IDPs transition from coils to globules serve as useful proxies for the LCST / UCST values. This implies that one can design sequences with desired values for the theta temperature with either increasing or decreasing radii of gyration above the theta temperature. Here, we show that the Monte Carlo simulations performed in the so-called intrinsic solvation (IS) limit version of the temperature-dependent ABSINTH implicit solvation model, yields a useful heuristic for discriminating between sequences with known LCST versus UCST phase behavior. Accordingly, we use this heuristic in a supervised approach, integrate it with a genetic algorithm, combine this with IS limit simulations, and demonstrate that novel sequences can be designed with LCST phase behavior. These calculations are aided by direct estimates of temperature dependent free energies of solvation for model compounds that are derived using the polarizable AMOEBA forcefield. To demonstrate the validity of our designs, we calculate coil-globule transition profiles using the full ABSINTH model and combine these with Gaussian Cluster Theory calculations to establish the LCST phase behavior of designed IDPs.

scholarly journals Onset of phase separation in the double perovskite oxide La2MnNiO6

2018 ◽  
Vol 97 (13) ◽  
Author(s):  
Steven R. Spurgeon ◽  
Peter V. Sushko ◽  
Arun Devaraj ◽  
Yingge Du ◽  
Timothy Droubay ◽  
...  
Keyword(s):  
Phase Separation ◽  
Double Perovskite ◽  
Perovskite Oxide
Sign in / Sign up

Export Citation Format

Share Document