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Preface to the viewpoint set on: Permanent magnets and underlining material science
10.1016/j.scriptamat.2018.02.033 2018-03-02
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Maximum performance of permanent magnet materials
10.1016/j.scriptamat.2018.02.006 2018-03-02 Calculations based on density functional theory conclude that the plausible upper limits of saturation magnetic polarization, magnetic transition temperature, and the magnetocrystalline anisotropy constant of permanent magnet materials could be ∼2.7 T, ∼2000 ... |
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Computational phase diagrams for the Nd-based magnets based on the combined ab initio/CALPHAD approach
10.1016/j.scriptamat.2018.01.030 2018-02-09 Sintered magnets hold a high amount of oxygen because of the strong affinity of oxygen with lanthanide elements, where oxygen forms variety of stable and metastable oxide phases. In order to control microstructures, which can affect magnetic properties, it is... |
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Heavy rare earth free, free rare earth and rare earth free magnets - Vision and reality
10.1016/j.scriptamat.2018.01.032 2018-02-06 It is commonly understood that among the intermetallic phases used for permanent magnets, practically none can fully realize its potential based on the intrinsic magnetic properties. We discuss different reasons leading to this limitation, known as the Brown ... |
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Perspectives of stochastic micromagnetism of Nd2Fe14B and computation of thermally activated reversal process
10.1016/j.scriptamat.2017.11.012 2017-12-26 The thermal and dynamical properties Nd2Fe14B at finite temperatures are studied with an atomic model Hamiltonian. The temperature dependence of the magnetization including the reorientation transition was obtained successfully. Moreover, the atom-specific ob... |
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Atomic worlds: Current state and future of atom probe tomography in geoscience
10.1016/j.scriptamat.2017.11.014 2017-11-29 Atom Probe Tomography (APT) is rapidly finding new applications within the geosciences. Historically connected with materials science and semiconductor device applications, recent years have seen APT established as a useful tool for nanoscale geochemistry, of... |
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Searching the weakest link: Demagnetizing fields and magnetization reversal in permanent magnets
10.1016/j.scriptamat.2017.11.020 2017-11-28 Magnetization reversal in permanent magnets occurs by the nucleation and expansion of reversed domains. Micromagnetic theory offers the possibility to localize the spots within the complex structure of the magnet where magnetization reversal starts. We comput... |
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Screening of rare-earth-lean intermetallic 1-11 and 1-11-X compounds of YNi9In2-type for hard-magnetic applications
10.1016/j.scriptamat.2017.11.038 2017-11-25 We report on theoretical investigations of ferromagnetic rare-earth-transition-metal phases with the structure of YNi9In2 and with additional atoms X at two interstitial positions. By a high-throughput-screening (HTS) approach based on density functional theo... |
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The current and future status of rare earth permanent magnets
10.1016/j.scriptamat.2017.11.010 2017-11-16 With their excellent magnetic performance, Nd-Fe-B magnets have a large share of the permanent magnet market, even after the sudden rise in the price of rare earths in 2011, which have been supported by magnet manufacturers' efforts to save heavy rare earths.... |
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Industrial application of atom probe tomography to semiconductor devices
10.1016/j.scriptamat.2017.09.004 2017-11-15 Advanced semiconductor devices offer a metrology challenge due to their small feature size, diverse composition and intricate structure. Atom probe tomography (APT) is an emerging technique that provides 3D compositional analysis at the atomic-scale; as such,... |