Semiconductors
Semiconductor Silicon Crystal Growth
Czochralski magnetic field generators (MCZ) stabilizing convection in molten silicon to enable next-gen semiconductor wafers.
The Physics of Molten Silicon
The global semiconductor industry relies on flawless, monolithic silicon ingots grown via the Czochralski process. Inside the pulling furnace, silicon is melted at extreme temperatures (over 1420°C). At these temperatures, intense thermally-driven convection currents create turbulence in the liquid melt.
This turbulence causes irregular dopant striations and oxygen inhomogeneity as the crystal is slowly pulled. Because liquid silicon is an electrical conductor, exposing the melt to a strong static magnetic field acts as a dampening force (via Lorentz forces) that suppresses this convective turbulence.
Lorentz Force Damping
By applying a uniform 2-5 Tesla field via HTS REBCO coils around the crucible, the melt becomes virtually motionless. This allows atoms to arrange into a perfectly uniform crystalline lattice, which is strictly required for < 3nm node microprocessor manufacturing.
Enabling 450mm Wafer Production
As the industry attempts the leap from 300mm to 450mm wafers to reduce chip costs and increase yield, the scale of the required silicon melt increases exponentially. Consequently, the convective forces in a larger crucible become vastly more violent.
Conventional resistive copper electromagnets simply cannot generate the necessary uniform magnetic field across such a massive diameter without consuming unsustainable megawatts of power and requiring gargantuan footprints. REBCO HTS magnets solve this physical scaling bottleneck entirely.
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Flawless 3nm/2nm Nodes
Sub-nanometer surface roughness and absolute oxygen homogeneity required for EUV lithography.
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Zero Thermal Load on Fab
Unlike conventional coils dissipating MWs of heat, HTS persistent coils contribute zero thermal load to the sensitive fab environment.
Global Wafer Giants
The foundational producers of the silicon substrates powering the global digital economy.
Shin-Etsu
The world's largest supplier of semiconductor silicon wafers, pioneering ultra-pure crystal extraction.
Siltronic
Global leader in hyperpure silicon wafers, driving innovation in magnetically stabilized Czochralski growth.
GlobalWafers
Providing advanced epitaxial and polished wafers tailored for next-gen logic and memory chips.