Application of low-temperature area-selective regrowth for ultrashallow sidewall GaAs tunnel junctions

2002 ◽  
Vol 81 (14) ◽  
pp. 2563-2565 ◽  
Author(s):  
Yutaka Oyama ◽  
Takeo Ohno ◽  
Kenji Tezuka ◽  
Ken Suto ◽  
Jun-ichi Nishizawa
Keyword(s):  
Low Temperature ◽  
Tunnel Junctions ◽  
Temperature Area

Ultra shallow sidewall GaAs tunnel junctions prepared by low-temperature area-selective epitaxial re-growth method

2005 ◽  
Vol 275 (1-2) ◽  
pp. e1085-e1089 ◽  
Author(s):  
Yutaka Oyama ◽  
Takeo Ohno ◽  
Ken Suto ◽  
Jun-ichi Nishizawa
Keyword(s):  
Low Temperature ◽  
Tunnel Junctions ◽  
Growth Method ◽  
Temperature Area

Low-Temperature Tunneling Electroresistance in Ferromagnetic Metal/Ferroelectric/Semiconductor Tunnel Junctions

2021 ◽  
Author(s):  
Liming Chen ◽  
Jian Zhou ◽  
Xiao Zhang ◽  
Kuankuan Ding ◽  
Jianxiang Ding ◽  
...  
Keyword(s):  
Low Temperature ◽  
Tunnel Junctions ◽  
Ferromagnetic Metal

Low-temperature magnetic characterization of optimum and etch-damaged in-plane magnetic tunnel junctions

2013 ◽  
Vol 114 (11) ◽  
pp. 114506 ◽  
Author(s):  
Jimmy J. Kan ◽  
Kangho Lee ◽  
Matthias Gottwald ◽  
Seung H. Kang ◽  
Eric E. Fullerton
Keyword(s):  
Low Temperature ◽  
Tunnel Junctions ◽  
Magnetic Tunnel Junctions ◽  
Magnetic Characterization

Improvement on the heat dissipation of permanent magnet synchronous motor using heat pipe

2019 ◽  
Vol 234 (5) ◽  
pp. 1249-1259
Author(s):  
Zhenping Wan ◽  
Bo Sun ◽  
Xiaowu Wang ◽  
Wanyu Wen ◽  
Yong Tang
Keyword(s):  
Low Temperature ◽  
Permanent Magnet ◽  
Heat Pipe ◽  
Heat Dissipation ◽  
Permanent Magnet Synchronous Motor ◽  
Synchronous Motor ◽  
Temperature Fields ◽  
Distribution Profile ◽  
End Caps ◽  
Temperature Area

A novel permanent magnet synchronous motor with heat pipe for electric vehicle is designed with the aim to reduce the end winding temperature. Software FLUENT is used to simulate the temperature fields. The temperature distribution profile of the winding of the permanent magnet synchronous motor with heat pipe is similar to that of the traditional permanent magnet synchronous motor. But the temperature values of the winding of the permanent magnet synchronous motor with heat pipe are lower than those of the traditional permanent magnet synchronous motor. The area of the region with relative low temperature at permanent magnet synchronous motor with heat pipe is also larger than at traditional permanent magnet synchronous motor. The highest temperature of the winding of the permanent magnet synchronous motor with heat pipe is 16.4°C lower than that of the traditional permanent magnet synchronous motor. The highest temperature and the lowest temperature of the lamination of the permanent magnet synchronous motor with heat pipe are all lower than those of the traditional permanent magnet synchronous motor. The temperatures of the two end caps of the permanent magnet synchronous motor with heat pipe are apparently higher than those of the traditional permanent magnet synchronous motor since some heat generated at the end winding is transferred to the end cap by the heat pipe. The low temperature area at the middle housing of the permanent magnet synchronous motor with heat pipe is larger than that of the traditional permanent magnet synchronous motor. The temperature discrepancy between the evaporator of the heat pipe and the end winding is about 60°C.

A simple device for increasing the accessibility of reciprocal space in low-temperature area-detector experiments

1995 ◽  
Vol 28 (5) ◽  
pp. 650-650
Author(s):  
M. R. Pressprich ◽  
B.-J. Fransen ◽  
A. Darovsky ◽  
P. Coppens
Keyword(s):  
Low Temperature ◽  
Data Collection ◽  
Temperature Data ◽  
Reciprocal Space ◽  
Simple Device ◽  
Area Detector ◽  
Crystal Orientations ◽  
Oscillation Method ◽  
Temperature Area

A device is described that allows collection of oscillation method data in two different crystal orientations, without remounting of the crystal. Because of its small size, the device can be inserted into a cryostat chamber, and used for low-temperature data collection with area detectors.

Anomalous Behavior in Spin Dependent Tunnel Junctions

1997 ◽  
Vol 475 ◽  
Author(s):  
C. L. Platt ◽  
B. Dieny ◽  
A.E. Berkowitz
Keyword(s):  
Magnetic Field ◽  
Low Temperature ◽  
Barrier Layer ◽  
Tunnel Junction ◽  
Applied Magnetic Field ◽  
Low Temperatures ◽  
Tunnel Junctions ◽  
Anomalous Behavior ◽  
Field Transition

ABSTRACTSpin dependent tunneling has been investigated in tunnel junctions composed of a variety of materials. The best results thus far have been with either HfO2 or MgO as the barrier layer using CoFe, Fe, or Co as the magnetic electrodes. The maximum magnetoresistive (MR) response of these junctions has been at low temperatures on the order of 30% in HfO2 and 20% in MgO. We have also observed a variety of anomalous behavior in some of our tunnel junctions at low temperature. These include MR effects dependent on the angle of orientation of the tunnel junction in the applied magnetic field, transition fields greater than lOkOe, and negative MR effects on the order of 2%.

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