scispace - formally typeset
Search or ask a question

What is the theoretical basis for the neodymium magnet? 


Best insight from top research papers

The theoretical basis for neodymium magnets involves the calculation of the anisotropic field and the utilization of heavy rare earth hydride for improved chemical stability and permeation efficiency . Neodymium magnets are the strongest type of permanent magnets commercially available and are widely used in various applications . The magnetization behavior of nanostructure magnets is governed by the coupling intensity between soft and hard magnetic clusters . Slow relaxation of magnetization is observed in neodymium single-ion magnets, providing deeper insight into the pursuit of promising light lanthanide single-molecule magnets .

Answers from top 5 papers

More filters
Papers (5)Insight
The paper does not provide information about the theoretical basis for the neodymium magnet.
The provided paper does not discuss the theoretical basis for the neodymium magnet.
The paper does not provide information about the theoretical basis for the neodymium magnet.
The paper does not provide information about the theoretical basis for the neodymium magnet.
Patent
Mao Huayun, Liu Lujun 
19 Dec 2017
5 Citations
The paper does not provide information about the theoretical basis for the neodymium magnet.

Related Questions

What are the key features of neo-nationalism?5 answersNeo-nationalism, a significant political phenomenon in the 21st century, encompasses various forms such as far-right nationalism, evangelical nationalism, separatist nationalism, and religious nationalism. These movements often focus on maintaining internal homogeneity and border control within established national boundaries. Unlike traditional nationalism, neo-nationalism exhibits high-intensity identity politics with quasi-fundamentalist characteristics, deviating from core traditional values and societal norms. It has gained mainstream legitimacy globally, influencing public discourse on language policies, like advocating for monolingual English in the United States. Additionally, neo-nationalism has seen a rise in political influence through legal parliamentary channels in various regions worldwide, impacting state power and local identities.
What is research on NEO DFT in quantum tunneling?5 answersResearch on NEO-DFT in quantum tunneling focuses on incorporating nuclear quantum effects into quantum chemistry calculations, particularly in low-energy reactions involving light nuclei and tunneling phenomena. The NEO approach treats select nuclei quantum mechanically alongside electrons, improving the accuracy of reaction probabilities and rate constants for processes like proton transfer reactions. Additionally, NEO-DFT methods efficiently calculate ground and excited states, considering nuclear quantum effects and non-Born-Oppenheimer behavior, crucial for studying photochemical processes and excited state geometries. By including explicit electron-proton correlation, the NEO-XCHF scheme significantly enhances the description of nuclear wave functions, leading to more accurate vibrational frequencies and geometries, especially in hydrogen bonding interactions and transfer reactions. These advancements pave the way for better understanding and simulating fundamental processes like proton-coupled electron transfer and photoinduced proton transfer.
How are neodymium magnets made?4 answersNeodymium magnets are made through a multi-step process. First, the raw materials are weighed and melted in a furnace to obtain a crude permanent magnet product solution. This solution is then cooled, cured, and ground to obtain permanent magnet powder. The powder is then placed in a magnetic field for orientation and shaping, and pressed to obtain a blank. The blank is cut, polished, and tempered in a vacuum environment to obtain the final neodymium magnet. Another method involves fine grinding of raw materials, stirring, pressing, and forming to prepare the magnet. Yet another method involves smelting, powder preparation, forming, sintering, machining, surface treatment, and finished product inspection and packaging. The composition of the neodymium-iron-boron magnet can vary, with different elements and percentages used to achieve desired properties.
How does pendulum with neodymium magnets produce electricity?5 answersA pendulum with neodymium magnets can produce electricity by utilizing the magnetic force of the magnets. The magnets are arranged in a helical structure outside a unit coil, which allows for the transmission of magnetic fields in vortexes to the coil, resulting in improved electricity generation performance. The magnets generate a magnetic field that is transferred to the winding coil body while rotating, creating a vortex through the rotation of the neodymium magnets. This helical arrangement of neodymium magnets inside the coil body increases the efficiency of electricity generation compared to traditional magnet-based devices. The generated magnetic field interacts with the winding coil, inducing an electric field that generates electricity in the coil. By harnessing the mechanical energy of the pendulum's circular motion and converting it into electrical energy, the pendulum with neodymium magnets serves as an efficient electricity generation device.
How can neodymium be used to remove heavy metals from wastewater?4 answersNeodymium can be used to remove heavy metals from wastewater through a process called selective ion flotation. This involves using sodium dodecyl sulfate as a collector and various ions with different radius and charge, such as aluminum, calcium, and iron, to selectively float neodymium ions out of the wastewater. Another method for removing heavy metals from wastewater is through the use of nanofiltration (NF) membranes. These membranes, created from advanced materials, can efficiently remove heavy metal ions from wastewater through interfacial polymerization, grafting techniques, and the addition of nano-fillers. Additionally, phytoremediation or bioremediation technology can be employed, where plants like Mimosa Pudica are used to bioaccumulate heavy metals like Cd, Pb, and Cu from wastewater through their roots. Adsorption processes using low-cost adsorbents, ranging from agricultural waste to industrial waste, are also effective in removing heavy metals from wastewater.
How does a small-scale neodymium magnet power generator works?2 answersA small-scale neodymium magnet power generator works by utilizing the attraction and repulsion forces between magnets and metal plates. The generator consists of a number of metal plates spaced at short distances from each other in a circular arrangement. Three strong neodymium magnets rotate around this circle, with each magnet attracted to and moving towards the metal plate closest to it. However, the magnets never collide with the metal plates because the plates deviate from the magnet's path before collision, and the magnet is then attracted to the next metal plate. This design allows for continuous rotation and the generation of mechanical energy. The generated energy can be used to power other mechanisms and overcome frictional forces.

See what other people are reading

What physics is described by the heat flux distribution on the divertor tiles in a tokamak fusion device?
5 answers
The heat flux distribution on divertor tiles in a tokamak fusion device is influenced by various physics aspects. These include the impact of kinetic effects and non-neutral plasma physics in the Debye sheath, ion collisions with recycled neutrals, electron wall emission, and plasma-gas collisions. Additionally, the divertor design, such as the divertor structure and cooling system, plays a crucial role in managing the heat load. Furthermore, the divertor geometry and its adjustability affect plasma performance, with the concept of a variable geometry divertor allowing tailored geometry to match different plasma configurations. Turbulence behavior and heat transport in the edge plasma are also significant factors, with the radial electric field playing a crucial role in determining heat flux width. Particle-in-cell simulations provide insights into the heat flux dynamics, highlighting the importance of electron and ion behavior in the sheath region.
What is/ are the commom cause /s of this error?
5 answers
The common causes of errors can vary depending on the context. In the case of a three-axis magnetic sensor, common causes of errors include issues related to the mounting states of magnetic elements, mismatches between magnetic field application and detection directions, nonuniform sensitivities of magnetic elements, or a combination of these factors. In the field of medical errors, causes can stem from lack of knowledge, incorrect decisions, or defective procedures, leading to mistakes in patient care. Additionally, in reliability analysis, common cause failures (CCFs) are a significant concern, especially in safety instrumented systems. Different methods like the beta-factor model, PDS method, Markov analysis, and stochastic simulation are used to address CCFs, each with its own limitations and applicability based on system complexity and feedback data availability.
What is the classification of materials for nonlinear optics?
5 answers
Materials for nonlinear optics can be classified into various categories based on their structures and properties. Inorganic nonlinear optical materials cover a wide spectral range and are crucial for laser systems. Crystalline porous materials, including metal-organic frameworks and polyoxometalates, offer structural diversity for organizing dipolar chromophores, enhancing second and third-order nonlinear optical effects. Multiferroic materials exhibit both magnetic and electric order, enabling control of magnetization through electric fields, making them suitable for nonlinear optics studies. 2D materials like graphene and transition metal chalcogenides show enhanced nonlinear optical properties due to their single-layer atomic structure, making them valuable for applications in optical signal processing. Novel strategies focus on materials like BaTiO3 and LiNbO3 for enhancing second-harmonic generation at the nanoscale, expanding the range of materials for nonlinear optics applications.
What is the density of epoxy resin?
4 answers
The density of epoxy resin can vary depending on the specific formulation and additives used. Different studies have reported varying densities for epoxy resins. For instance, a high-density epoxy resin blocking material was prepared with a density ranging from 1.21 to 1.43 g/cm³. Another study mentioned the fabrication of NdFeB magnets with epoxy resins, achieving a density of 5.35 g/cm³ for samples with 2% wt epoxy resin. Additionally, a phenolic epoxy polymer bulk was developed with an adjustable density, allowing for customization based on requirements. These examples highlight the flexibility in adjusting the density of epoxy resins to suit different applications and performance needs.
How composition of matter can be determined?
4 answers
The composition of matter can be determined through various methods outlined in the provided contexts. One approach involves utilizing a magnetic field and detecting birefringence in a light beam passing through a test sample to determine its material composition. Another method involves growing group III-V nanowires or nanopyramids on a graphene layer supported by a crystalline substrate, where the crystal orientation and facet orientations of the nanowires are directed by the substrate, aiding in material composition analysis. Additionally, an apparatus like a flow cytometer can be employed to determine compositional properties of a material by analysing components of interest within a liquid sample and regulating the flow rate based on noise contributions, providing insights into the material's composition.
The position in terms of coordinates of carletonville in gluten?
5 answers
Carletonville's position can be determined using coordinates systems like global or local coordinates. In the context of gluten, a gluten-free (GF) diet is not necessarily beneficial for healthy individuals. However, individuals with gluten-related disorders (GRD) face challenges accessing gluten-free (GF) foods, impacting their health and quality of life. The method for transforming information about a position on a globe into local coordinates involves determining distances from reference points like longitude and latitude. Additionally, magnetic sensors can identify potential positions of objects based on magnetic field components, showcasing the importance of precise positioning. Therefore, while Carletonville's exact coordinates are not explicitly provided in the contexts, the significance of accurate positioning methods is highlighted in various contexts.
What are the most effective types of water spraying systems for dust mitigation in construction site?
5 answers
The most effective types of water spraying systems for dust mitigation in construction sites include nebulizer-retrofitted UAVs for aerial water spraying, water-sprinkling on roads, and optimized spray schemes for dust suppression at excavation faces. Studies show that water-sprinkling can efficiently remove PM particles from road surfaces and reduce their concentration in the environment, with different efficiencies based on road types. Additionally, the use of specific spray schemes with different pressure levels can significantly reduce dust concentrations at excavation faces, especially for larger dust particles. Moreover, magnetized water under specific conditions has been found to enhance dust removal performance and temperature reduction in underground environments, providing a theoretical basis for effective dust control measures in mines.
How does the magnetic property of CuCo2o4 change with temperature?
5 answers
The magnetic property of CuCo2O4 changes with temperature due to variations in saturation magnetization and coercivity. At room temperature, CuCo2O4 exhibits lower saturation magnetization compared to CoFe2O4, while CoFe2O4 shows higher coercive field due to the anisotropy of Co2+ ions. As the temperature decreases, magnetization and coercivity values increase, with the highest coercivity observed at 800°C annealing temperature. The saturation magnetization of CuCo2O4 increases monotonically with rising annealing temperature, reaching a maximum of 29.7 emu/g at 1000°C. The observed magnetic behavior is attributed to phase transformations, grain growth, and reduced thermal energy at lower temperatures. This indicates that the magnetic properties of CuCo2O4 are influenced by both temperature and annealing conditions, showcasing potential for varied applications based on these factors.
Amount of heat transferred from perpendicular to parallel component due to pitch angle scattering
5 answers
The amount of heat transferred from the perpendicular to the parallel component due to pitch angle scattering can vary based on different scenarios. Research indicates that particle pitch angle scattering can lead to significant fluxes of lower energy electrons precipitated by nonducted components, potentially affecting heat transfer between perpendicular and parallel components. Additionally, the conservation of the magnetic moment for relativistic runaway electrons plays a crucial role in understanding the collisionless pitch-angle-scattering effect, allowing for momentum transfer between perpendicular and parallel directions during acceleration. Furthermore, the rate of pitch angle scattering for fast particles streaming through magnetic perturbations is influenced by factors like the relative perturbation amplitude and the particle Larmor radius normalized by the field-aligned wavelength of the perturbations, impacting the heat transfer between perpendicular and parallel components.
What are some key advantages of using the Magnetic Vector potential and Electric Scalar potential (A, V - Formulation)?
5 answers
The Magnetic Vector potential and Electric Scalar potential (A-V Formulation) offer several advantages in electromagnetic applications. These potentials are utilized in solving electromagnetic quasistatic problems efficiently in both time and frequency domains, as demonstrated in the developed finite-element formulations. By employing these potentials, symmetric and stable system matrices are achieved, even in static scenarios, enhancing computational stability and accuracy. Additionally, the A-V Formulation proves beneficial in analyzing complex systems like bi-phase hybrid stepper motors, where different potential combinations are compared to optimize computational efficiency and memory usage while maintaining model accuracy. Overall, the A-V Formulation provides a versatile and robust approach for addressing electromagnetic phenomena in various practical applications.
How does the magnetic field affect free radicals during pyrolysis in relation to chemical bonds?
5 answers
The magnetic field plays a significant role in influencing free radicals during pyrolysis, impacting the chemical bonds formed. Studies have shown that the presence of a magnetic field during pyrolysis can lead to the production of ferromagnetic samples with increased yields and magnetization. Additionally, the magnetization of these samples can vary with temperature changes, indicating a dynamic relationship between the magnetic field and the formation of ferromagnetic structures. Furthermore, the magnetic field may aid in the formation of three-dimensional ferromagnetic structures in pyrolytic carbon, affecting the chemical properties and bonds within the material. Overall, the magnetic field's influence on free radicals during pyrolysis demonstrates its role in altering chemical structures and bond formations in the resulting materials.