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Parametric Resonance of Magnetization Excited by Electric Field

2016
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Release : 2016
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Kind : eBook
Book Rating : 403/5 ( reviews)

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Book Synopsis Parametric Resonance of Magnetization Excited by Electric Field by : Yu-Jin Chen

Download or read book Parametric Resonance of Magnetization Excited by Electric Field written by Yu-Jin Chen. This book was released on 2016. Available in PDF, EPUB and Kindle. Book excerpt: This thesis describes the experiments that demonstrate the ability to efficiently excite magnetization parametrically by electric field. The experiments are done with nanoscale magnetic tunnel junctions, which are multilayer thin film devices patterned into nanopillar shape. One of the layers possesses strong perpendicular magnetic anisotropy and exhibits strong voltage-controlled magnetic anisotropy. This magneto-electric effect allows one to modulate the perpendicular magnetic anisotropy of the layer and parametrically excite large-amplitude oscillations of the magnetization. The results of this experiment show that it is possible to parametrically excite resonance in a magnetic nanostructure using electric field and that the threshold voltage for this process is low: it is found to be well below 1Volt. This paves the way towards developing energy-efficient spintronic devices based on parametric excitation of magnetization by electric field.

Wave Turbulence Under Parametric Excitation

2012-12-06 Science
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Release : 2012-12-06
Genre : Science
Kind : eBook
Book Rating : 950/5 ( reviews)

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Book Synopsis Wave Turbulence Under Parametric Excitation by : Victor S. L'vov

Download or read book Wave Turbulence Under Parametric Excitation written by Victor S. L'vov. This book was released on 2012-12-06. Available in PDF, EPUB and Kindle. Book excerpt: WAVE TURBULENCE is a state of a system of many simultaneously excited and interacting waves characterized by an energy distribution which is not in any sense close to thermodynamic equilibrium. Such situations in a choppy sea, in a hot plasma, in dielectrics under arise, for example, a powerful laser beam, in magnets placed in a strong microwave field, etc. Among the great variety of physical situations in which wave turbulence arises, it is possible to select two large limiting groups which allow a detailed analysis. The first is fully developed wave turbulence arising when energy pumping and dissipation have essentially different space scales. In this case there is a wide power spectrum of turbulence. This type of turbulence is described in detail e. g. in Zakharov et al. 1 In the second limiting case the scales in which energy pumping and dissipation occur are the same. As a rule, in this case a narrow, almost singular spectrum of turbulence appears which is concentrated near surfaces, curves or even points in k-space. One of the most important, widely investigated and instructive examples of this kind of turbulence is parametric wave turbulence appearing as a result of the evolution of a parametric instability of waves in media under strong external periodic modulation (laser beam, microwave electromagnetic field, etc. ). The present book deals with parametric wave turbulence.

Magnetic and Electric Resonance

2018-07-27 Science
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Release : 2018-07-27
Genre : Science
Kind : eBook
Book Rating : 943/5 ( reviews)

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Book Synopsis Magnetic and Electric Resonance by : Marian Apostol

Download or read book Magnetic and Electric Resonance written by Marian Apostol. This book was released on 2018-07-27. Available in PDF, EPUB and Kindle. Book excerpt: This book is devoted to a quasi-classical treatment of quantum transitions, with an emphasis on nuclear magnetic resonance, nuclear quadrupole resonance and electric dipolar resonance. The method described here is based on the quasi-classical description of condensed matter, and makes use of the equation of motion of harmonic oscillators with external forces. In addition to known results in magnetic resonance, the book also presents parametric resonance for electric dipoles and dipolar interaction which may lead to spontaneous electric polarization.

Nuclear Science Abstracts

1976 Nuclear energy
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Release : 1976
Genre : Nuclear energy
Kind : eBook
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Book Synopsis Nuclear Science Abstracts by :

Download or read book Nuclear Science Abstracts written by . This book was released on 1976. Available in PDF, EPUB and Kindle. Book excerpt:

Magnetization Oscillations and Waves

2020-12-17 Science
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Release : 2020-12-17
Genre : Science
Kind : eBook
Book Rating : 277/5 ( reviews)

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Book Synopsis Magnetization Oscillations and Waves by : Alexander G. Gurevich

Download or read book Magnetization Oscillations and Waves written by Alexander G. Gurevich. This book was released on 2020-12-17. Available in PDF, EPUB and Kindle. Book excerpt: Written by two well-known researchers in the field, this useful reference takes an applied approach to high frequency processes including oscillations and waves in ferromagnets, antiferromagnets, and ferrimagnets. Problems evaluated include ferromagnetic and antiferromagnetic resonances, spin waves, nonlinear processes, and high frequency manifestations of interactions between the magnetic system and other systems of magnetically ordered substances as elastic waves and charge carriers. Unlike previous monographs on this subject, which are highly theoretical and written for very advanced readers, this book requires only an average college background in mathematics and experimental physics. It will be a valuable addition to the library of engineers and scientists in research and development for communications applications, and scientists interested in nonlinear magnetic phenomena. It also serves as an excellent introduction to the topic for newcomers in the field. Magnetization Oscillations and Waves not only presents results but also shows readers how to obtain them; most formulas are derived with so many details that readers can reproduce them. The book includes many summaries and tables and detailed references to significant work in the area by European researchers.

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