반응형 Physics/자성체 Physics/자성체 2012. 1. 25. Diamagnetic, Paramagnetic, and Ferromagnetic Materials When a material is placed within a magnetic field, the magnetic forces of the material's electrons will be affected. This effect is known as Faraday's Law of Magnetic Induction. However, materials can react quite differently to the presence of an external magnetic field. This reaction is dependent on a number of factors, such as the atomic and molecular structure of the material, and the net mag.. Physics/자성체 2012. 1. 25. Fundamental of Magnetism - Mathias Getzlaff http://www.docin.com/p-35804310.html Physics/자성체 2011. 12. 9. The two-current model, The spin-valve type GMR effect The two-current model The physical origin of GMR is the electron spins effect on the electronic transport in ferromagnetic conductors. The first proposal by Mott described the spin splitting of the energy bands in the ferromagnetic spin states induces the specific transport behavior. Then, Fert and Grünberg experimentally demonstrated the spin dependent conduction in ferromagnetic metals and a s.. Physics/자성체 2011. 12. 9. Magnetic anisotropy Is there a relation between magneto-crystalline anisotropy and the orbital moment?A spin-reorientation from in-plane to out-of-plane occurs when the magneto-crystalline anisotropy favors an out-of-plane magnetization and is large enough to overcome the shape anisotropy. The magneto-crystalline anisotropy and hence the perpendicular magnetic anisotropy is given by the anisotropy in the spin-orbit.. Physics/자성체 2011. 10. 16. Tunneling Magnetoresistance(TMR), Magnetic Tunnel Junction(MTJ) Tunneling Magnetoresistance (TMR) http://physics.unl.edu/~tsymbal/reference/spin-dependent_tunneling/tunneling_magnetoresistance.shtml Magnetic Tunnel Junction (MTJ) http://physics.unl.edu/~tsymbal/reference/spin-dependent_tunneling/magnetic_tunnel_junction.shtml Spin-Dependent Tunneling http://physics.unl.edu/~tsymbal/reference/spin-dependent_tunneling/index.shtml Magnetic Random Access Memory .. Physics/자성체 2011. 9. 30. Magnetic Anisotropy Constant for selected materials 일반적으로 uniaxial anisotropy가 cubic anisotropy보다 큼. Physics/자성체 2011. 9. 30. Summary of magnetic anisotropy constant Physics/자성체 2011. 5. 30. Simple explanation of GMR effect Physics/자성체 2011. 5. 30. Spin-polarized current, Spin-Torque, Magneto-Resistance 출처 http://www.imec.be/tunamos/public/background.html Physics/자성체 2011. 5. 30. 자성이란? 교환바이어스(exchange bias)를 설명하기 전에 우선은 자성에 대해 간단하게 살펴봅시다. 자성을 이해하려면 원자 단위부터 들어가야 합니다. 원자내엔 핵과 전자가 있습니다. 여기서 전자는 핵의 인력에 묶여 핵 주위를 공전하고 있습니다. 전자는 아시다시피 (-) 전하를 갖고 있습니다. 이러한 전하의 이동은 전류를 만들어냅니다. 따라서 전기와 자기는 같이 묶어서 생각할 수 있습니다. 이 말은 전기가 흐르면 그 주위에는 자력이 발생하고 자석이 움직이면 그 안에는 전기가 흐르게 됩니다. 어쨋든 핵에 묶여 있는 전자는 공전운동을 하기때문에 원형 전류에 의한 궤도 자기 모멘트가 생겨납니다. 또 전자자체가 자전 운동을 하고 있습니다. 마치 지구가 태양 주위를 공전하면서 자전을 하고 있는 모습이지요. 이러한 자전.. Physics/자성체 2010. 11. 8. MOKE(Magneto-Optic Kerr Effect) measurement using PEM Physics/자성체 2010. 10. 26. Unit for Magnetic Properties 출처 : Lakeshore 이전 1 다음 반응형
