Experimental evidence for non-purely electric field-induced threshold switching and modified thermal-assisted model in GeTe phase change material

2021 ◽  
Vol 118 (20) ◽  
pp. 203502
Author(s):  
Ziqi Chen ◽  
Hao Tong ◽  
Xin Li ◽  
Lun Wang ◽  
Ruizhe Zhao ◽  
...  
Keyword(s):  
Electric Field ◽  
Phase Change ◽  
Experimental Evidence ◽  
Phase Change Material ◽  
Threshold Switching ◽  
Change Material

scholarly journals Melting Within a Spherical Enclosure

1982 ◽  
Vol 104 (1) ◽  
pp. 19-23 ◽  
Author(s):  
F. E. Moore ◽  
Y. Bayazitoglu
Keyword(s):  
Mathematical Model ◽  
Energy Storage ◽  
Flow Field ◽  
Phase Change ◽  
Experimental Evidence ◽  
Phase Change Material ◽  
Saturation Temperature ◽  
Temperature Profiles ◽  
Change Material ◽  
Storage Characteristics

Melting of a phase change material within a spherical enclosure is considered. The phase change material is initially at its saturation temperature. Suddenly the enclosure temperature is increased to a fixed value. The density of the solid is assumed to exceed the density of the liquid, the implication being that the solid continually drops toward the bottom of the shell as melting progresses. This motion of the solid generates a flow field within the liquid. A mathematical model is developed and confirmed by experimental evidence. The interface positions and the temperature profiles for various Stefan and Fourier numbers are determined, and the energy storage characteristics are studied. It is found that the convective effects can be neglected only at small Stefan numbers.

Direct observation of structural transitions in the phase change material Ge2Sb2Te5

2016 ◽  
Vol 4 (39) ◽  
pp. 9303-9309 ◽  
Author(s):  
Ruiwen Shao ◽  
Kun Zheng ◽  
Yongjin Chen ◽  
Bin Zhang ◽  
Qingsong Deng ◽  
...  
Keyword(s):  
Electric Field ◽  
Phase Change ◽  
Phase Change Material ◽  
Direct Observation ◽  
Crystalline Phase ◽  
Structural Transitions ◽  
Single Crystalline ◽  
Multi Level ◽  
Change Material

Electric field-induced transitions from an amorphous to a polycrystalline to a single-crystalline phase in Ge2Sb2Te5were observed, which corresponded to multi-level changes in resistance.

NUMERICAL STUDY OF A SOLAR GREENHOUSE DRYER WITH A PHASE-CHANGE MATERIAL AS AN ENERGY STORAGE MEDIUM

2018 ◽  
Vol 49 (6) ◽  
pp. 509-528 ◽  
Author(s):  
Orawan Aumporn ◽  
Belkacem Zeghmati ◽  
Xavier Chesneau ◽  
Serm Janjai
Keyword(s):  
Energy Storage ◽  
Phase Change ◽  
Phase Change Material ◽  
Numerical Study ◽  
Storage Medium ◽  
Solar Greenhouse ◽  
Change Material

CONTROL OF HEAT RELEASE ENERGY DURING HEATING FROM SOLID-SOLID PHASE CHANGE MATERIAL

2018 ◽  
Author(s):  
Ryohei Gotoh ◽  
Tsuyoshi Totani ◽  
Masashi Wakita ◽  
Harunori Nagata
Keyword(s):  
Phase Change ◽  
Heat Release ◽  
Phase Change Material ◽  
Solid Phase ◽  
Change Material
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