Magnetic resonance imaging Archives - IEEE Transactions on Magnetics

Optimization Method Based on Zonal Harmonics for Axially Symmetric Magnets

February 5, 2025Oscar Sucre, Stefan GlögglerJournalCoils, Harmonic analysis, Magnetic fields, Magnetic resonance imaging, Magnetization, Optimization methods, Permanent magnets, Polynomials, Solenoids, Vectors

An optimization method based on the zonal harmonic description of the magnetic field, suitable for the design of axially symmetric magnetic sources, is presented. Expressions of both axial Bz and radial Bρ components of the magnetic field are obtained as the infinite sum of the zonal harmonics. For arrangements having as the basic building block […]

Effects of Nb Content on the Microstructure and Magnetic Properties of the Sm₁.₂Zr₀.₂(Fe₀.₈Co₀.₂)₁₁.₅-ₓ Ti₀.₅Nbₓ (x=0 –0.4, at.%) Alloys

February 5, 2025Shuainan Xu, Jinbo Wei, Chengli Li, Yan Wang, Zhen Shi, Xiaolian Liu, Yuan Hong, Anjian Pan, Yancheng Kong, Lizhong Zhao, Xuefeng ZhangJournalAmorphous magnetic materials, Coercive force, Iron, Magnetic hysteresis, Magnetic properties, Magnetic resonance imaging, Magnetometers, Metals, Saturation magnetization, Soft magnetic materials

ThMn12-type SmFe12-based magnet is suggested to be a promising permanent magnet because of its intrinsic magnetic properties and thermal stability. However, their potential applications are currently limited, as the existence of a soft magnetic α -Fe phase in the alloy deteriorates the hard magnetic properties. Hence, in this work, Nb element was introduced into the […]