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| FIZ7251 | Magnetic Susceptibility of Superconductors | 3+0+0 | ECTS:7.5 | | Year / Semester | Fall Semester | | Level of Course | Third Cycle | | Status | Elective | | Department | DEPARTMENT of PHYSICS | | Prerequisites and co-requisites | None | | Mode of Delivery | Face to face | | Contact Hours | 14 weeks - 3 hours of lectures per week | | Lecturer | Prof. Dr. Süleyman BOLAT | | Co-Lecturer | - | | Language of instruction | Turkish | | Professional practise ( internship ) | None | | | | The aim of the course: | |
| Programme Outcomes | CTPO | TOA | | Upon successful completion of the course, the students will be able to : | | | | CTPO : Contribution to programme outcomes, TOA :Type of assessment (1: written exam, 2: Oral exam, 3: Homework assignment, 4: Laboratory exercise/exam, 5: Seminar / presentation, 6: Term paper), PO : Learning Outcome | | |
| Basic Experimental Techniques and Concepts: Multipurpose crystat for low temperature magnetic and electric measurements of solids, AC susceptibility response of superconductors; cryogenic aspects, investigation of inhomogeneous system and of the equilibrium mixed state, alternating-field susceptometry and magnetic susceptibility of superconductors, AC inductive measurements, AC susceptibility studies of superconducting properties under high hydrostatic pressure, DC magnetization and flux profiles techniques, studies of non-ideal superconductors using DC magnetic methods. Theoretical Models: AC losses in type II superconductors, early theories of real and imaginer part of superconductors, detailed theory of the magnetic response of high temperature superconductors, exponantial critical state model fit for intergranular AC susceptibility of sintered HT superconductors, phenomenological model fit to intragranular AC susceptibility of sintered HT superconductors, critical current density from AC susceptibility data. Magnetic Susceptibility for Bulk and Single Cristal Sample: Responses of HT superconductors to various combinations of AC and DC magnetic fields, non-linear AC susceptibility response near the irreversibility line, higher harmonics, the frequency dependence of the AC irreversibility line of some HT superconductors, utility of AC susceptibility in the low field limit for characterizing inhomogeneous superconductors, vortex dinamics, reversible and irreversible magnetization behavior in conventional superconductors. |
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| Course Syllabus | | Week | Subject | Related Notes / Files | | Week 1 | Basic Experimental Techniques and Concepts | | | Week 2 | Multi-purpose cryostat system for low temperature magnetic and electrical measurements of solids, low temperature AC susceptibility of superconductors | | | Week 3 | inhomogeneous systems, mixed state equilibrium, AC field susceptibility measurement system, AC inductive measurements, AC susceptibility measurements at high hydrostatic pressure | | | Week 4 | DC magnetization and flux profiling techniques, DC magnetic methods in non-ideal superconductors | | | Week 5 | AC losses in type II superconductors | | | Week 6 | the first theories on real and virtual susceptibility of superconductors | | | Week 7 | details of magnetic response theory in HT superconductors | | | Week 8 | Exponential Critical State Model | | | Week 9 | Midterm | | | Week 10 | Imagery (Phenomenological) Model for AC Susceptibility of intergranular region of HTS | | | Week 11 | obtaining critical current density from AC susceptibility measurements | | | Week 12 | Magnetic Susceptibility for Bulk and Single Crystal Samples: Magnetic susceptibility of HT superconductors for different combinations of AC and DC magnetic fields | | | Week 13 | nonlinear AC susceptibility near the irreversibility line, high harmonics | | | Week 14 | frequency dependence of the AC irreversibility line in some HT superconductors, characterization of inhomogeneous superconductors Low field limit for AC susceptibility | | | Week 15 | vortex dynamics and AC susceptibility, reversible and irreversible magnetization behavior in conventional superconductors | | | Week 16 | Final Exam | | | |
| Method of Assessment | | Type of assessment | Week No | Date | Duration (hours) | Weight (%) | | | | | | | | |
| Student Work Load and its Distribution | | Type of work | Duration (hours pw) | No of weeks / Number of activity | Hours in total per term | | Yüz yüze eğitim | 3 | 14 | 42 | | Sınıf dışı çalışma | 3 | 14 | 42 | | Arasınav için hazırlık | 3 | 5 | 15 | | Arasınav | 2 | 1 | 2 | | Dönem sonu sınavı için hazırlık | 3 | 5 | 15 | | Dönem sonu sınavı | 2 | 1 | 2 | | Total work load | | | 118 |
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