Anisotropic Nd(2) Fe(14) B/Fe(67) Co(33) nanocomposite thin films are successfully fabricated. The multilayer composite films comprise Nd-rich shell-enveloped Nd(2) Fe(14) B grains and a Fe(67) Co(33) phase. The strong (001) texture of the Nd(2) Fe(14) B grains and the presence of exchange-coupled Fe(67) Co(33) lead to a high remanence and the presence of the Nd-rich shell gives rise to a high coercivity. The unique nanocomposite microstructure provides hints for developing rare-earth-lean high-performance magnets.
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http://dx.doi.org/10.1002/adma.201202328 | DOI Listing |
Bioelectromagnetics
October 2022
Diabetology Clinic, Krompachy Hospital, Agel SK Inc., Krompachy, Slovakia.
Mounting evidence suggests enhanced blood pressure (BP) variability (BPV) independent role in cardiovascular (CV) damage. The goal was to estimate the effect of the carotid baroreceptor (CB) magnetic stimulation on sudden high BP elevation. Mean femoral arterial BP (MAP), heart rate (HR), baroreflex sensitivity (BRS), and ear lobe skin microcirculatory blood flow, by microphotoelectric plethysmography (MPPG), were simultaneously recorded in conscious rabbits sedated by pentobarbital intravenous (i.
View Article and Find Full Text PDFAdv Mater
September 2021
State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, 066004, China.
High-performance ferromagnetic materials are essential for energy conversion and electronic devices. However, the random and nonuniform magnetization reversal in ferromagnetics limits their performance that can be achieved. Here, through both micromagnetism simulations and experiments, a directional magnetization reversal that initiates first from large grains toward smaller ones is discovered by engineering Nd Fe B/α-Fe gradient nanostructures.
View Article and Find Full Text PDFBioelectromagnetics
September 2020
Krompachy Hospital, Agel SK, Krompachy, Slovakia.
The goal was to compare static magnetic field (SMF, generated by Nd -Fe -B magnets) vasodilator capacity with verapamil (VER, a potent, clinically verified Ca channel-blocking agent), aimed to assess SMF implementation in conditions with vascular ischemia. Skin microcirculatory blood flow measured by microphotoelectric plethysmogram was recorded in conscious rabbits after 40 min of 0.25 T SMF regional exposure to ear microvascular net (SMF-Vas, n = 20), or 0.
View Article and Find Full Text PDFAngew Chem Int Ed Engl
January 2020
P. Roy and Diana T. Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, 231 S. 34th St., Philadelphia, PA, 19104, USA.
The separation of rare-earth ions from one another is challenging due to their chemical and physical similarities. Nearly all rare-earth separations rely upon small changes in ionic radii to direct speciation or reactivity. Herein, we show that the intrinsic magnetic properties of the rare-earth ions impact the separations of light/heavy and selected heavy/heavy binary mixtures.
View Article and Find Full Text PDFChemSusChem
November 2019
Department for Nanostructured Materials, Jožef Stefan Institute, Jamova 39, SI-1000, Ljubljana, Slovenia.
Recycling of end-of-life Nd-Fe-B magnets is an important strategy for reducing the environmental dangers associated with rare-earth mining and overcoming the supply risks associated with the rare-earth elements. In this study, a novel concept for recycling of sintered Nd-Fe-B magnets by directly recovering the matrix Nd Fe B grains is presented. The procedure is based on the anodic etching of sintered Nd-Fe-B magnets in a nonaqueous dimethylformamide (DMF)/0.
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