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Course, academic year 2018/2019
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Permanent Magnets - NFPL068
Title in English: Permanentní magnety
Guaranteed by: Department of Physics of Materials (32-KFM)
Faculty: Faculty of Mathematics and Physics
Actual: from 2018
Semester: both
E-Credits: 2
Hours per week, examination: 1/0 Ex [hours/week]
Capacity: unlimited
Min. number of students: unlimited
State of the course: not taught
Language: Czech
Teaching methods: full-time
Note: you can enroll for the course in winter and in summer semester
Guarantor: prof. RNDr. Vladimír Šíma, CSc.
Classification: Physics > Solid State Physics
Annotation -
Last update: prof. RNDr. Vladimír Šíma, CSc. (11.05.2007)

Theory of the hysteresis loop. Demagnetizing field. Review of modern materials and technology. Technical applications and introduction to permanent magnet design.
Course completion requirements - Czech
Last update: prof. RNDr. Vladimír Šíma, CSc. (11.05.2007)

podmínkou zakončení předmětu je složení ústní zkoušky

Literature - Czech
Last update: prof. RNDr. Vladimír Šíma, CSc. (11.05.2007)

1. Krupička S.: Fyzika feritů a příbuzných magnetických kysličníku (Academia)

2. Supermagnets, Hard Magnetic Materials (eds. G. J. Long, F. Grandjean) - NATO ASI Series, C, Vol. 331, Kluwer Academic Publishers, 1991.

Teaching methods - Czech
Last update: prof. RNDr. Vladimír Šíma, CSc. (11.05.2007)

přednáška

Requirements to the exam - Czech
Last update: prof. RNDr. Vladimír Šíma, CSc. (11.05.2007)

  • zkouška je ústní, rozsah požadovaných znalostí odpovídá sylabu přednášky v rozsahu prezentovaném na přednášce
Syllabus -
Last update: prof. RNDr. Vladimír Šíma, CSc. (11.05.2007)

1. Theory of the hysteresis loop. Virgin magnetization curve. Reversible and irreversible magnetization processes (domain wall movement, rotation processes). Nucleation. Coercive field, energy product. 2. Demagnetizing field. Physical fundamentals and consequences. Critical dimension of single-domain particle. Demagnetizing factor. Corrected magnetization curve. Operating point of a permanent magnet. 3. Survey of modern materials and technologies. Physical requirements for properties of hard magnetic materials and technologies used. 4. Technical applications and elements of permanent magnets design. Survey of applications. Magnetic circuits solution. Final elements method.

 
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