scholarly journals Curie-temperature dependence of microwave heating behavior of NixZn(1−x)Fe2O4 powders

AIP Advances ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. 045320
Author(s):  
K. Kashimura ◽  
T. Namioka ◽  
T. Miyata ◽  
T. Fujii ◽  
H. Itoh ◽  
...  
Keyword(s):  
Curie Temperature ◽  
Temperature Dependence ◽  
Microwave Heating ◽  
Heating Behavior

Dielectric Characterizations and Microwave Heating Behavior of Zinc Compound in Microwave Field

2017 ◽  
Vol 43 (5) ◽  
pp. 2329-2338 ◽  
Author(s):  
Guo Lin ◽  
Tu Hu ◽  
Chenhui Liu ◽  
Libo Zhang ◽  
Jinhui Peng ◽  
...  
Keyword(s):  
Microwave Heating ◽  
Microwave Field ◽  
Zinc Compound ◽  
Heating Behavior

scholarly journals Numerical modeling of microwave heating

2010 ◽  
Vol 42 (1) ◽  
pp. 99-124 ◽  
Author(s):  
A.K. Shukla ◽  
A. Mondal ◽  
A. Upadhyaya
Keyword(s):  
Thermal Conductivity ◽  
Numerical Modeling ◽  
Temperature Distribution ◽  
Microwave Heating ◽  
Two Dimensional ◽  
Conventional Furnace ◽  
Microwave Furnace ◽  
Simulation Results ◽  
Heating Behavior ◽  
Cylindrical Samples

The present study compares the temperature distribution within cylindrical samples heated in microwave furnace with those achieved in radiatively-heated (conventional) furnace. Using a two-dimensional finite difference approach the thermal profiles were simulated for cylinders of varying radii (0.65, 6.5, and 65 cm) and physical properties. The influence of susceptor-assisted microwave heating was also modeled for the same. The simulation results reveal differences in the heating behavior of samples in microwaves. The efficacy of microwave heating depends on the sample size and its thermal conductivity.

scholarly journals Temperature dependence of phonons in Pd3Fe through the Curie temperature

2018 ◽  
Vol 98 (2) ◽  
Author(s):  
F. C. Yang ◽  
O. Hellman ◽  
M. S. Lucas ◽  
H. L. Smith ◽  
C. N. Saunders ◽  
...  
Keyword(s):  
Curie Temperature ◽  
Temperature Dependence

scholarly journals Microwave-induced heating behavior of Y-TZP ceramics under multiphysics system

2020 ◽  
Vol 9 (1) ◽  
pp. 119-130
Author(s):  
Kaihui Cui ◽  
Tianqi Liao ◽  
Chen Qiu ◽  
Hua Chen ◽  
Junwen Zhou
Keyword(s):  
Numerical Model ◽  
Microwave Heating ◽  
Three Dimensional ◽  
Heating System ◽  
Dielectric Materials ◽  
Microwave Cavity ◽  
Heating Process ◽  
Highly Sensitive ◽  
Dimensional Distribution ◽  
Heating Behavior

AbstractThis paper aims to investigate the heating behaviors of Y-TZP arrays under microwave irradiation. In this study, a three-dimensional numerical model of the microwave heating system was developed by COMSOL Multiphysics software. The numerical model was verified by microwave heating experiment, and the average root means square errors (RMSE) between the simulation and experimental data also confirmed the reliability of the model. The varying position and arrays of materials were applied to predict and visualize the three-dimensional distribution of the electromagnetic field and temperature during the microwave heating process. The results show that the temperature field distribution in microwave cavity was highly sensitive to the dielectric materials, the arrangement of the Y-TZP array interfered with the distribution of standing waves. The results can serve as references for the study to design and optimize the ceramic’s application in terms of microwave heating.

The temperature dependence of the photoinduced soft mode in Sn2P2S6 crystal

2019 ◽  
Vol 33 (08) ◽  
pp. 1950061
Author(s):  
K. A. Brekhov ◽  
N. A. Ilyin ◽  
E. D. Mishina ◽  
P. A. Prudkovskii ◽  
G. Kh. Kitaeva
Keyword(s):  
Phase Transition ◽  
Femtosecond Laser ◽  
Curie Temperature ◽  
Temperature Dependence ◽  
Oscillation Frequency ◽  
Phonon Mode ◽  
Soft Mode ◽  
Laser Pulses ◽  
Femtosecond Laser Pulses ◽  
Curie Temperature Tc

In this paper, we present the results of the temperature dependence studies of the photoinduced phonon mode which appears in a ferroelectric-semiconductor Sn2P2S6 (SPS) crystal under the influence of femtosecond laser pulses. We show that its behavior reminds the soft mode one near the phase transition. However, the observed decrease in the oscillation frequency in the vicinity of Curie temperature Tc is much weaker than previously reported. This can be explained by the shadowing of the pure soft mode by its interaction with other photoinduced modes.

scholarly journals Impact of Oil Composition on Microwave Heating Behavior of Heavy Oils

2018 ◽  
Vol 32 (2) ◽  
pp. 1592-1599 ◽  
Author(s):  
Yang Zhang ◽  
Mohamed Adam ◽  
Abarasi Hart ◽  
Joseph Wood ◽  
Sean P. Rigby ◽  
...  
Keyword(s):  
Microwave Heating ◽  
Heavy Oils ◽  
Oil Composition ◽  
Heating Behavior

scholarly journals Magnetization of magnetically inhomogeneous Sr2FeMoO6-δ nanoparticles

2021 ◽  
Vol 7 (3) ◽  
pp. 85-90
Author(s):  
Gunnar Suchaneck
Keyword(s):  
Curie Temperature ◽  
Temperature Dependence ◽  
Magnetic Materials ◽  
Spin Wave ◽  
Analytical Description ◽  
Higher Order ◽  
Ferromagnetic Behavior ◽  
Double Perovskites ◽  
Langevin Function ◽  
First Time

Magnetization is a key property of magnetic materials. Nevertheless, a satisfactory, analytical description of the temperature dependence of magnetization in double perovskites such as strontium ferromolybdate is still missing. In this work, we develop, for the very first time, a model of the magnetization of nanosized, magnetically inhomogeneous Sr2FeMoO6-δ nanoparticles. The temperature dependence of magnetization was approximated by an equation consisting of a Bloch-law spin wave term, a higher order spin wave correction, both taking into account the temperature dependence of the spin-wave stiffness, and a superparamagnetic term including the Langevin function. In the limit of pure ferromagnetic behavior, the model is applicable also to SFMO ceramics. In the vicinity of the Curie temperature (T/TC > 0.85), the model fails.

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