Inorganic Material Magnetism TRIZ Cases

CuO doping helps Ni-Co-Zn ferrite maintain high permeability with low magnetic loss at VHF and UHF frequencies for RF components.

Rapid solidification makes Ni-Co-Mn-Ti magnetocaloric alloys more homogeneous, mechanically stable, and tunable for magnetic refrigeration.

Directional concavities on flaky Fe-Co-Ni particles cut eddy and hysteresis losses while preserving permeability and thermal stability.

Lower-cobalt FeCo alloying with vanadium avoids quenching, cuts cost, and maintains high permeability with lower hysteresis losses.

A Ba-La-Co-Ni ferrite composition and calcining route cuts magnetic loss at 1-2 GHz while maintaining permeability for radar and GPS uses.

Controlled Co and Sn oxide ratios help Ni-Cu-Zn ferrite maintain bending strength while improving 900 MHz noise suppression.

Post-calcination CoO and NiO addition strengthens Mn-Zn ferrite grain boundaries to cut core loss and improve thermal shock reliability.

Controlling B, AlN, and hot-rolling conditions helps non-oriented electrical steel maintain low iron loss and high flux density at lower cost.

Pulsed laser shock waves and thermal diffusion refine magnetic domains while protecting the forsterite film to cut iron loss and noise.

Catalyst-assisted curing enables high magnetite nanoparticle loading while limiting brittleness and preserving shielding and impact resistance.

Pre-magnetized particles close cracks autonomously, restoring structural integrity and electrical conductivity without external energy.

A magnetic elastic admixture deforms across the solenoid gap to cut magnetic reluctance, sustain attraction over stroke, and simplify machining.

An oxide interlayer replaces the glass film to stabilize coating adhesion, suppress intruding structures, and reduce iron loss.

Alternating compressive and tensile stress from vibrating electron-beam irradiation cuts transformer iron loss and magnetostriction.

Controlling sulfur content and pore volume in ferrite carrier cores improves charge rise-up, strength, and image stability with less toner scattering.

Controlled annealing chemistry and phosphoric insulation coating reduce iron loss while preserving coating adhesion without a forsterite film.

A sulfuric-acid wash and heat-formed oxide layer replaces glass film to keep coating adhesion stable while reducing iron loss.

Adding 0.5-2.0% platinum group metal hardens split ferrite core faces, preserving contact pressure and noise removal after cable mounting.

Magnetic particles disperse reactive core-shell particles in a base metal, enabling flux-free bonding with strong joints and longer preform shelf life.

Bismuth-, calcium-, and indium-substituted garnets raise dielectric constant without depressing Curie temperature in below-resonance microwave parts.

A tuned FeCoV strip composition raises saturation polarization while keeping magnetization losses low for laminated electrical machine cores.

Controlling resin melting during kneading keeps high magnetic powder loading flowable, improving mold filling and bonded magnet heat resistance.

Anisotropic non-ferromagnetic precursors align during sintering to produce rare-earth-free hexaferrite magnets without strong fields.

Controlled forsterite film anchoring and particle size distribution improve adhesion consistency while lowering iron loss in grain-oriented electrical steel.

Optimized ferrite particle size and crystallite structure enable injection-molded bonded magnets with strong orientation, magnetic force, and strength.

Controlled ferrite bulk density and compaction improve resin dispersibility, magnetic properties, and tensile elongation in bonded magnet rotors.

Rare-earth oxide particle control in non-oriented electrical steel promotes grain growth during stress relief annealing, reducing iron loss at lower cost.

Low-lightness etching resist enables narrow laser-etched grooves on grain-oriented electrical steel while limiting thermal diffusion and magnetic loss.

Controlled MgO, chloride, and SiO2 in the annealing separator form a thin low-porous forsterite layer that cuts stamping tool wear.

Mixing magnetic refrigeration materials with different transition temperatures enables target tuning within 0.7 K for more efficient AMR heat exchange.

Controlled rare-earth, Ca/Sr/Ba, and boron ratios help thin ferrite magnets resist demagnetizing fields and stay stable across temperatures.

A dielectric Me''TiO3 phase helps M-type hexaferrite maintain high permeability and resonance frequency while reducing magnetic loss.

Controlled Sr substitution and fine crystallite volume raise Ku in barium ferrite powder, improving perpendicular squareness and SNR.

A Ca/Mg-containing oxidized layer insulates soft magnetic metal particles, raising withstand voltage and suppressing eddy-current core loss.

Controlled Mn/S ratio and recrystallization annealing give electrical steel strong rolling and transverse magnetism without cross-rolling.

A two-stage heat treatment lets one non-grain-oriented electrical steel strip balance magnetic losses and mechanical strength for rotor and stator use.

Controlled Fe-rich particle sizing in an epoxy composition raises magnetic permeability, cuts magnetic loss, and improves PCB hole embedding.

Fine silica powder lowers viscosity in soft magnetic resin molding material, enabling high permeability with better mold fillability.

Resistive layers formed between magnetic particles during sintering suppress eddy currents, reducing magnet heating and thermal damage.

A two-stage heat treatment lets one non-grain-oriented electrical steel strip shift between rotor strength and stator magnetic performance.

Supercooling solidification expands Ti solubility in Fe-Si-Co alloy, preventing Ti precipitation and defects for low coercivity and high permeability.

Molten-salt roasting and low-temperature reduction raise Mn and Fe leaching while cutting acid-alkali use and shortening soft-magnet oxide production.

Doped (AE)Fe2As2 polycrystalline bulks overcome grain-boundary current blocking to trap magnetic fields above 1 T with scalable magnet size.

Tin-alloyed non-grain-oriented silicon steel simplifies rolling and annealing to preserve magnetic induction, cut power loss, and raise productivity.

Nanocrystalline cobalt-doped nickel ferrite made by ball milling and heat treatment cuts high-frequency magnetic loss while maintaining permeability.

A single-layer resin film with insulated soft magnetic particles keeps UHF RFID tags readable near metal while staying under 0.5 mm thick.

Partial Sr substitution and controlled crystallization keep ferrite particles fine and anisotropic field distribution low for denser recording and better SNR.

A dense Ti-Si oxide insulation layer formed by sol-gel raises dust core initial permeability while keeping the magnetic particle insulated.