Cyanide-Bridged WVMnIII Bimetallic Chains Composed of a Blocked W Hexacyanide Precursor: Geometry-Related Magnetic Couplings and Magnetostructural Correlation

2013 ◽  
Vol 52 (15) ◽  
pp. 8677-8684 ◽  
Author(s):  
Jin Wuk Lee ◽  
Kwang Soo Lim ◽  
Dae Won Ryu ◽  
Eui Kwan Koh ◽  
Sung Won Yoon ◽  
...  
Keyword(s):  
Magnetic Couplings ◽  
Magnetostructural Correlation

Magnetostructural correlation in isolated trinuclear iron(iii) oxo acetate complexes

2018 ◽  
Vol 20 (24) ◽  
pp. 16673-16685 ◽  
Author(s):  
Johannes Lang ◽  
Joachim M. Hewer ◽  
Jonathan Meyer ◽  
Jonas Schuchmann ◽  
Christoph van Wüllen ◽  
...  
Keyword(s):  
Geometric Structures ◽  
Magnetic Couplings ◽  
Magnetostructural Correlation

We elucidate the correlation between geometric structures and magnetic couplings in trinuclear iron(iii) oxo acetate complexes[Fe3O(OAc)6(Py)n]+(n= 0, 1, 2, 3) when isolated and trapped as gaseous ions.

Determination of the shear force of high-coercive permanent magnets from an alloy of neodymium—iron—boron rare-earth elements of 5 mm thickness

2020 ◽  
pp. 7-10
Author(s):  
A.Ya. Krasil'nikov ◽  
A.A. Krasilnikov ◽  
D.V. Taranov
Keyword(s):  
Rare Earth ◽  
Shear Force ◽  
Permanent Magnets ◽  
Magnetic System ◽  
Magnetic Coupling ◽  
Magnetic Systems ◽  
Neodymium Iron Boron ◽  
Magnetic Couplings ◽  
Standard Calculation

The possibility of applying the standard calculation of the shear force of thin high-coercive neodymium— iron—boron permanent magnets in magnetic systems and magnetic couplings is considered. A correction factor is proposed for calculating the shear force in systems with thin magnets, which allows at the stage of developing sealed equipment to calculate the shear force of permanent magnets in these systems. Keywords: magnetic system, magnetic coupling, permanent magnet, shear force. [email protected]

scholarly journals Ferromagnetism of LaCoO$_3$ films

2020 ◽  
Vol 8 (6) ◽  
Author(s):  
Andrii Sotnikov ◽  
Kyo-Hoon Ahn ◽  
Jan Kuneš
Keyword(s):  
Atomic State ◽  
Correlation Effects ◽  
Electron Hole ◽  
Magnetic Exchange ◽  
Microscopic Inhomogeneity ◽  
Intermediate Spin ◽  
Spin Excitations ◽  
Electron Correlation Effects ◽  
Magnetic Couplings ◽  
Ferromagnetic Ordering

We study ferromagnetic ordering and microscopic inhomogeneity in tensile strained LaCoO_33 using numerical simulations. We argue that both phenomena originate from effective superexchange interactions between atoms in the high-spin (HS) state mediated by the intermediate-spin excitations. We derive a model of the HS excitation as a bare atomic state dressed by electron and electron-hole fluctuations on the neighbor atoms. We construct a series of approximations to account for electron correlation effects responsible for HS fluctuations and magnetic exchange. The obtained amplitudes and directional dependence of magnetic couplings between the “dressed” HS states show a qualitative agreement with experimental observations and provide a new physical picture of LaCoO_33 films.

A DETERMINATION OF THE SHEAR FORCE OF THIN HIGH-COERCIVITY PERMANENT MAGNETS MADE FROM THE ALLOY WITH RARE-EARTH ELEMENTS

2021 ◽  
pp. 24-30
Author(s):  
A. Ya. Krasilʼnikov ◽  
A. A. Krasilʼnikov
Keyword(s):  
Rare Earth ◽  
Magnetic Flux ◽  
Rare Earth Elements ◽  
Standard Method ◽  
Shear Force ◽  
Permanent Magnets ◽  
High Coercivity ◽  
Research Results ◽  
Magnetic Couplings

The article considers the possibility of using a standard method for calculating the shear force of thin, high-coercivity neodymium–iron–boron type permanent magnets in magnetic clutches (couplings). The research results allowed to introduce a correction coefficients in the method of calculating the transmitting torque in magnetic clutches (couplings) with thin magnets. The possibility of 08H22N6T brand steel using for magnetic flux conductors manufacturing in a magnetic couplings.

Experiment and Analysis of Squirrel Cage Asynchronous Magnetic Coupling

2011 ◽  
Vol 464 ◽  
pp. 28-32
Author(s):  
Chao Jun Yang ◽  
Hong Wei Gu ◽  
Jing Jing Wang ◽  
Ru Yu Ma ◽  
Zhi Teng Li ◽  
...  
Keyword(s):  
Skin Effect ◽  
Magnetic Coupling ◽  
Experimental Results ◽  
Transmission Performance ◽  
Squirrel Cage ◽  
Magnetic Couplings ◽  
Better Than

Transmission performances of some squirrel cage magnetic couplings, which were different in magnet pole number, slot number, slot depth or slot area, were tested. Experimental results and analysis indicate that these parameters (magnet pole number, slot number, slot depth and slot area) all affect transmission performance of a squirrel cage magnetic coupling. In these factors, deep slot can not only increase slot area to improve a squirrel cage magnetic coupling’s transmission performance, but also can make skin effect on conducting bars more obvious to further improve the transmission performance. Therefore, slot depth affects transmission performance of a squirrel cage magnetic coupling greatly. The experimental results show that a deep slot squirrel cage magnetic coupling’s transmission performance is much better than a common one.

scholarly journals Compact Low-Velocity Ocean Current Energy Harvester Using Magnetic Couplings for Long-Term Scientific Seafloor Observation

2020 ◽  
Vol 8 (6) ◽  
pp. 410
Author(s):  
Longxiang Huang ◽  
Feng Lyu
Keyword(s):  
Energy Harvester ◽  
Optimal Parameter ◽  
Ocean Current ◽  
Low Velocity ◽  
3D Fem ◽  
Seafloor Observation ◽  
Magnetic Couplings ◽  
Current Energy ◽  
Ocean Current Energy

A compact low-velocity ocean current energy harvester (LOCH) is developed to power undersea instrument platforms for long-term scientific seafloor observation. Noncontact magnetic couplings are used in the LOCH to eliminate friction and achieve reliable underwater sealing so that the LOCH can adapt the low-velocity ocean current and its energy transmission efficiency can be improved. The parameters of the magnetic couplings are optimized by the three-dimensional finite-element method (3D FEM). A laboratory experiment platform is designed; and the static and dynamic performances of the magnetic couplings with different parameters are tested. The experiment results are compared with computer simulations to verify the optimal parameter design. Finally; a prototype of the LOCH is designed and its underwater experiment proves that it can start smoothly and work stably at a current velocity of as low as 0.4 m/s

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