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Destruction phenomena in ferroactive materials

Journal of Advanced Dielectrics 2020年第4期10卷 22-30页

作者： sidek Khasbulatov Aleksander Cherpakov Ivan Parinov Konstantin Andryushin Lidiya Shilkina Vladimir Aleshin Inna Andryushina Balabek Mardaliev David Gordienko Iliya Verbenko Larisa Reznichenko Research Institute of Physics Southern Federal University Rostov-on-Don 344090 Stachki str.194Russia Faculty of Physics and Information-Communication Technologies Grozny 364024 Sultan Dudaev Boulevard17A Russia Institute of Mathematics Mechanics and Computer Science named after of I.I.Vorovich Southern Federal University 344090 Rostov-on-Don Stachki str.200/1Russia Faculty of Physics Southern Federal University 344090 Rostov-on-DonZorge 5Russia

The results of a comprehensive study of the crystal structure,grain structure,and strength properties of ceramic bismuth ferrite with rare earth elements(REE)obtained by two-stage solid-phase synthesis followed by sintering using conventional ceramic technology are *** reasons for the formation of low mechanical strength and the development of destruction phenomena in solid solutions with small REE(R<0:94Å)are considered:Tb,Dy,Ho,Er,Tm,Yb,*** causes of the observed phenomena associated with the composite-like structure of the studied media and,as a consequence,the occurrence of local stresses of structural elements that provoke crack formation are established.A source of the latter are also the structural features of the grain *** conclusion is made about the appropriateness of taking into account the information obtained when developing devices based on BiFeO_(3)/REE multiferroics.

关键词： Structure microstructure destruction multiferroics

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Analysis of SOI-MEMS Electrostatic Vibration Energy Harvester

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通讯和计算机（中英文版） 2012年第5期9卷 596-601页

作者： Muhamad Azman Miskam Othman sidek Mohammad Zulfikar Ishak Muhammad Afif Khalid Collaborative Microelectronic Design Excellence Centre Engineering Campus Universiti Sains Malaysia 14300 Nibong TebalPulau Pinang Malaysia

This paper presents a simulation of SOI-MEMS electrostatic vibration energy harvester using the architect module in CoventorWare2010. The device has a proof mass suspended by four complaint beams anchored to a fixed frame. Performance analysis is performing by optimizing the physical parameters of the beam that directly influence the stiffness and to ensure the proof mass moves smoothly with low cross-axis sensitivity. The main goal of this study is to achieve a high specific power harvested and a low resonance frequency. The results show that the newly proposed electrostatic energy harvesting system can produce maximum output power of 5.891μW when the excitation frequency is 2 kHz. The device has been designed to be fabricated by using Deep Reactive Ion Etching process that etch the structure pattern at top layer of Silicon On Insulator wafer. The device is currently being fabricated.

关键词：振动能量 MEMS 收割机 SOI 静电电能量采集系统最大输出功率制作设备

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Elastic Moduli of Zinc Oxyfluorotellurite Glasses

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材料科学与工程（中英文版） 2011年第3期5卷 319-322页

作者： sidek Haji Ab Aziz Rosmawati Sharuddin Khamirul Amin Matori Halimah Mohamed Kamari Department of Physics Faculty of Science Universiti Putra Malaysia 43400 UPM Serdang Selangor Malaysia

Systematic new series of ternary tellurite glasses in the form (TeO2)90(AlF3)90-x(ZnO)x have been successfully synthesized. Both longitudinal and shear ultrasonic velocities were measured in different compositions of the glass system by using the MBS8000 Ultrasonic Data Acquisition System at 10 MHz frequency and at room temperature. The elastic properties of ternary tellurite glasses (TeO2)90(AlF3)90-x(ZnO)x were measured as a function of composition. The ultrasonic velocity data, the density, the calculated elastic moduli and micro-hardness depend on the glass composition. The composition dependence was discussed in terms of ZnO modifiers that were expected to change the physical properties of oxyfluotellurite glasses.

关键词：弹性模量氧化锌碲酸盐玻璃数据采集系统眼镜超声波速玻璃成分玻璃系统

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