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铁磁—非磁金属超晶格中的自旋波研究
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作者 王永强 李振亚 《苏州大学学报(自然科学版)》 CAS 1993年第3期221-225,共5页
应用转移矩阵方法,研究了相邻铁磁层间具有反平行磁化的铁磁——非磁金属超晶体中的自旋波,得到了自旋波所满足的色散方程,分析了铁磁和非磁层厚度及铁磁界面层间的反铁磁耦合强度对自旋波谱的影响。
关键词 自旋波 反平行磁化 超晶格 金属
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Impact of radiation,melting,and chemical reaction on magnetohydrodynamics nanoparticle aggregation flow across parallel plates
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作者 Ram Prakash SHARMA J.K.MADHUKESH +3 位作者 Sunendra SHUKLA Amal ABDULRAHMAN B.C.PRASANNAKUMARA K.V.NAGARAJA 《Journal of Central South University》 SCIE EI CAS 2024年第10期3715-3729,共15页
The heat transfer between two corresponding plates,disks,and concentric pipes has many applications,including water cleansing and lubrication.Furthermore,TiO_(2)-water-based nanofluids are used widely because it is us... The heat transfer between two corresponding plates,disks,and concentric pipes has many applications,including water cleansing and lubrication.Furthermore,TiO_(2)-water-based nanofluids are used widely because it is useful for operating and controlling the temperature,especially in photovoltaic technology and solar panels.Motivated by these applications,the current study is based on the nanoparticle aggregation effect on magnetohydrodynamics(MHD)flow via rotating parallel plates with the chemical reaction.To achieve maximum heat transportation,the Bruggeman model is used to adapt the Maxwell model.Also,melting and thermal radiation effects are considered in the modeling to discuss heat transport.The Runge-Kutta-Fehlberg 4th−5th order method is used to attain numerical solutions.The main focus of this study is to see the thermodynamic behavior considering several aspects of nanoparticle aggregation.The heat transfer rate between the parallel plates is enhanced by improving the thermophoresis,radiation,and Brownian motion parameters.The rise in Schmidt number and chemical reaction rate parameter decreases the concentration distribution.This study will be helpful in enhancing the thermal efficiency of photovoltaic technology in solar plates,water purifying,thermal management of electronic devices,designing effective cooling systems,and other sustainable technologies. 展开更多
关键词 nanoparticle aggregation thermal radiation parallel plates magnetic field chemical reaction
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