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  Effect of annealing conditions on the microstructure and magnetic properties of sintered Nd-Fe-B magnets as seen by magnetic small-angle neutron scatteringMichels, Andreas  ; Perigo, Elio Alberto ; Titov, Ivan et alScientific Conference (2018, August 29) Detailed reference viewed: 158 (11 UL) Fundamentals and advances in magnetic hyperthermiaPerigo, Elio Alberto ; ; et alin Applied Physics Reviews (2015), 2 Detailed reference viewed: 189 (3 UL)Relaxations in the metastable rotator phase of n-eicosaneDi Giambattista, Carlo ; Sanctuary, Roland ; Perigo, Elio Alberto et alin Journal of Chemical Physics (2015), 143 Detailed reference viewed: 197 (12 UL)Synthesis and magnetic properties of Ta/NdFeB-based composite microwires; ; et al in Journal of Applied Physics (2015), 117 Detailed reference viewed: 154 (10 UL)Magnetic SANS study of a sintered Nd–Fe–B magnet: Estimation of defect sizePerigo, Elio Alberto ; ; Michels, Andreas in Acta Materialia (2015), 87 Detailed reference viewed: 176 (12 UL)Nd-enriched particles prepared from NdFeB magnets: A potential separation route; ; et al in Journal of Alloys and Compounds (2014), 615 Detailed reference viewed: 150 (9 UL)Magnetic properties of Ta/NdFeB core-shell microwiresSzary, Philipp ; ; et alPoster (2014, November) Detailed reference viewed: 100 (8 UL)A Static Measurement System for Soft Magnetic Materials; Perigo, Elio Alberto in IEEE Transactions on Magnetics (2014), 50(4), 6000104 Detailed reference viewed: 175 (2 UL) Experimental observation of magnetic poles inside bulk magnets via q \neq 0 Fourier modes of magnetostatic fieldPerigo, Elio Alberto ; ; et alin New Journal of Physics (2014), 16 Detailed reference viewed: 136 (3 UL)How Extrinsic Is the Coercivity in NdFeB Bonded Magnets?Perigo, Elio Alberto ; ; et alin IEEE Transactions on Magnetics (2013), 49(9), 5043-5047 The influence of the densification step, performed by uniaxial pressing at room temperature, on the coercivity of NdFeB bonded magnets has been analyzed. The mass density does not play any role on of non ... [more ▼] The influence of the densification step, performed by uniaxial pressing at room temperature, on the coercivity of NdFeB bonded magnets has been analyzed. The mass density does not play any role on of non-cured magnets prepared by the mentioned method. Due to the brittle and intergranular character of the Nd Fe B-based phase fracture, the nano-sized grains are not affected or the modification is negligible, which maintains unchanged. After curing, the intrinsic coercivity of themagnets is reduced as a function of the compaction pressure increase. [less ▲] Detailed reference viewed: 147 (3 UL)On the specific absorption rate of hyperthermia fluidsPerigo, Elio Alberto ; ; in Applied Physics Letters (2013), 103 The specific absorption rate (SAR) concept of hyperthermia ferrofluids is discussed. It is first suggested that SAR can be characterized at the steady state condition, taking into account the heating flow ... [more ▼] The specific absorption rate (SAR) concept of hyperthermia ferrofluids is discussed. It is first suggested that SAR can be characterized at the steady state condition, taking into account the heating flow mechanism from the ferrofluid to the external environment. The temperature dependence of SAR is then addressed, indicating that the influence arises from both magnetic susceptibility and relaxation time of the system. At last, a single equation able to express the temperature versus time profile of a ferrofluid, when SAR is virtually temperature independent, is proposed up to the equilibrium condition. [less ▲] Detailed reference viewed: 126 (2 UL)Magnetic field and gradient standards using permanent magnets: Design considerations, construction and validation by nuclear magnetic resonancePerigo, Elio Alberto ; in IEEE Transactions on Magnetics (2013), 49(8), 4717-4720 The construction and characterization of static magnetic density flux and gradient standards by using permanent magnets is presented. In the first case, the field homogeneity is high enough to be measured ... [more ▼] The construction and characterization of static magnetic density flux and gradient standards by using permanent magnets is presented. In the first case, the field homogeneity is high enough to be measured by a nuclear magnetic resonance magnetometer, confirming the traceability of the standard. In the second case, a gradient standard is shown. The experimental results obtained by Hall probes are in agreement with theoretical calculations. Designing considerations about materials choice and mounting are also addressed. [less ▲] Detailed reference viewed: 110 (5 UL)Stoner–Wohlfarth model for the anisotropic case; ; Perigo, Elio Alberto et alin Journal of Magnetism and Magnetic Materials (2013), 345 The Stoner–Wohlfarth (SW) model was calculated for the anisotropic case, by assuming crystallographical texture distributions as Gaussian, Lorentzian and cos n (alpha). All these distributions were tested ... [more ▼] The Stoner–Wohlfarth (SW) model was calculated for the anisotropic case, by assuming crystallographical texture distributions as Gaussian, Lorentzian and cos n (alpha). All these distributions were tested and both Gaussian and cos n (alpha) give similar results for Mr/Ms above 0.8. However, the use of cosn (alpha) makes it easier to find analytical expressions representing texture.The Lorentzian distribution is a suitable choice for not wel laligned magnets, or magnets with a high fraction of misaligned grains. It is discussed how to obtain the alignment degree Mr/Ms directly from two measurements of magnetic remanence at the transverse and parallel directions to the alignment direction of the magnet .It is demonstrated that even the wel laligned magnets with Mr/Ms=0.96 present coercive field of 60–70% of the anisotropy field, depending on the chosen distribution.The anisotropic SW model was used for discussing hysteresis squareness. Improving the crystalographical texture, the loop squareness also increases. [less ▲] Detailed reference viewed: 215 (3 UL) |
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