A temperature-based formulation for finite element analysis of generalized phase-change problems

A novel phase change memory structure with a separate heater was proposed for a multilevel storage. Finite element analysis was conducted to investigate the possibility of multilevel storage. 100 ns SET pulses, with an increasing amplitude from 0.5 V to 3 V, were applied for heating the phase change layer, Ge2Se2T5 (GST). From the simulation result, it was exhibited that the temperature in the GST layer increased gradually when an increasing pulse is applied to the separate heater layer (N-TiSi3). This implies that crystallization is well controlled by changing the amplitude of the applied SET pulse. The gradual increase in the temperature leads to gradual resistance drop, depending strongly on the capping material. The gradual resistance drop will allow multilevel storage for the memory device.

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Three dimensional finite element analysis with phase change by temperature recovery method

International Journal of Machine Tools and Manufacture ◽

10.1016/0890-6955(91)90046-6 ◽

1991 ◽

Vol 31 (1) ◽

pp. 1-7 ◽

Cited By ~ 14

Author(s):

Yinheng Chen ◽

Yong-Taek Im ◽

Zin-Hyoung Lee

Keyword(s):

Finite Element Analysis ◽

Finite Element ◽

Phase Change ◽

Three Dimensional ◽

Element Analysis ◽

Recovery Method ◽

Dimensional Finite Element ◽

Temperature Recovery ◽

Three Dimensional Finite Element

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Influence of Phase-Change Materials and Additional Layer on Performance of Lateral Phase-Change Memories

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.497.106 ◽

2011 ◽

Vol 497 ◽

pp. 106-110

Author(s):

You Yin ◽

Sumio Hosaka

Keyword(s):

Finite Element Analysis ◽

Finite Element ◽

Phase Change ◽

Phase Change Materials ◽

Electrical Characterization ◽

Element Analysis ◽

Additional Layer ◽

Thermal Confinement ◽

High Power Consumption ◽

High Level

Performance of lateral phase change memories (LPCMs) is investigated by both electrical characterization and finite element analysis. Ge2Sb2Te5 lateral PCMs (GST-LPCMs) exhibit a low reset current but a bad endurance. By replacing GST with Sb2Te3 (ST) and adding a TiN layer between ST and electrodes, the ST-TiN-LPCMs are demonstrated to have a much improved endurance. Finite element analysis of the LPCMs with electric-thermal structural interaction shows that thermal confinement makes GST-LPCMs low-power consumptive but that high level stress makes them readily broken. In contrast, ST-TiN-LPCMs experience low level stress during operation but high power consumption is required.

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Phase Change Materials Applied in Thermal Design

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.750-752.1211 ◽

2013 ◽

Vol 750-752 ◽

pp. 1211-1214

Author(s):

Shu Yang

Keyword(s):

Finite Element Analysis ◽

Finite Element ◽

Solar Energy ◽

Phase Change ◽

Phase Change Material ◽

Phase Change Materials ◽

Thermal Design ◽

Electronic Equipment ◽

Element Analysis ◽

Change Material

Phase change material has been widely used in the fields of solar energy, aerospace, aviation, and buildings. In this paper, paraffin is applied in the thermal design of electronic equipment, in order to maintain a constant working circumstance. Finite-element analysis is implemented to analyze the feasibility of this thermal design.

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Development of plug-ins to predict effective thermal conductivity of woven and microencapsulated phase change composite

Journal of Composite Materials ◽

10.1177/0021998316655202 ◽

2016 ◽

Vol 51 (6) ◽

pp. 733-743

Author(s):

Muhammad Owais Raza Siddiqui ◽

Danmei Sun

Keyword(s):

Thermal Conductivity ◽

Finite Element Analysis ◽

Finite Element ◽

Phase Change ◽

Effective Thermal Conductivity ◽

Phase Change Materials ◽

Research Work ◽

Element Analysis ◽

Microencapsulated Phase Change Materials ◽

Automatic Model Generation

The thermal property of textile structures plays an important role in the understanding of thermal behaviour of the clothing. In this work, user-friendly GUI plug-ins have been developed to generate both microscopic and mesoscopic scale models for finite element analysis. The plug-ins were developed by using Abaqus/CAE as a platform. The GUI Plug-ins enable automatic model generation and prediction of the effective thermal conductivity of woven composite and microencapsulated Phase Change Materials composites via finite element analysis by applying boundary conditions. The predicted effective thermal conductivities from plug-ins have been compared with the results obtained from published experimental research work based on an established mathematical model. They are correlated well. Moreover, the influence of phase change materials on heat transfer behaviour of microencapsulated Phase Change Materials composites was further analysed.

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