V.N. Syromyatnikov's Books

Phase Transitions and Crystal Symmetry

By: Yurii Aleksandrovich Izyumov,V.N. Syromyatnikov

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Phase Transitions and Crystal Symmetry

By: Yurii Aleksandrovich Izyumov,V.N. Syromyatnikov

About half a century ago Landau formulated the central principles of the phe nomenological second-order phase transition theory which is based on the idea of spontaneous symmetry breaking at phase transition. By means of this ap proach it has been possible to treat phase transitions of different nature in altogether distinct systems from a unified viewpoint, to embrace the aforemen tioned transitions by a unified body of mathematics and to show that, in a certain sense, physical systems in the vicinity of second-order phase transitions exhibit universal behavior. For several decades the Landau method has been extensively used to an alyze specific phase transitions in systems and has been providing a basis for interpreting experimental data on the behavior of physical characteristics near the phase transition, including the behavior of these characteristics in systems subject to various external effects such as pressure, electric and magnetic fields, deformation, etc. The symmetry aspects of Landau's theory are perhaps most effective in analyzing phase transitions in crystals because the relevant body of mathemat ics for this symmetry, namely, the crystal space group representation, has been worked out in great detail. Since particular phase transitions in crystals often call for a subtle symmetry analysis, the Landau method has been continually refined and developed over the past ten or fifteen years.

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462

Publisher

Springer Science & Business Media

Published Date

ISBN 10

9400919204

ISBN 13

9789400919204

Progress in Ferromagnetism Research

By: V. N. Murray

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Progress in Ferromagnetism Research

By: V. N. Murray

Ferromagnetism is a form of magnetism that can be acquired in an external magnetic field and usually retained in its absence, so that ferromagnetic materials are used to make permanent magnets. A ferromagnetic material may therefore be said to have a high magnetic permeability and susceptibility (which depends upon temperature). Examples are iron, cobalt, nickel, and their alloys. Ultimately, ferromagnetism is caused by spinning electrons in the atoms of the material, which act as tiny weak magnets. They align parallel to each other within small regions of the material to form domains, or areas of stronger magnetism. In an unmagnetised material, the domains are aligned at random so there is no overall magnetic effect. If a magnetic field is applied to that material, the domains align to point in the same direction, producing a strong overall magnetic effect. Permanent magnetism arises if the domains remain aligned after the external field is removed. Ferromagnetic materials exhibit hysteresis. In 2004, it was discovered that a certain allotrope of carbon, nanofoam , exhibited ferromagnetism. The effect dissipates after a few hours at room temperature, but lasts longer at cold temperatures. The material is also a semiconductor. It is thought that other similarly formed materials, of boron and nitrogen, may also be ferromagnetic. This new book rings together leading research from throughout the world.

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378

Publisher

Nova Publishers

Published Date

ISBN 10

1594543356

ISBN 13

9781594543357

Phase Transitions and Crystal Symmetry

By: Yurii Aleksandrovich Izyumov,V.N. Syromyatnikov

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Phase Transitions and Crystal Symmetry

By: Yurii Aleksandrovich Izyumov,V.N. Syromyatnikov

Average ratings

N/A

Write a review

Solve jigsaw puzzle

Age

Page Count

462

Publisher

Springer Science & Business Media

Published Date

ISBN 10

9400919204

ISBN 13

9789400919204

Book's by V.N. Syromyatnikov

Phase Transitions and Crystal Symmetry

Phase Transitions and Crystal Symmetry

Progress in Ferromagnetism Research

Progress in Ferromagnetism Research

Phase Transitions and Crystal Symmetry

Phase Transitions and Crystal Symmetry

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