Czochralski Crystal Growth System up to 2100°C - SKJ-50CZ

SKJ-50CZ is a CZ crystal growth system up to 2100°C and 2" crystals. The high-precision upper weighing device facilitates better control of crystal growth process including seed dipping, shoulder expansion, and steady growth. The upper pulling mechanism ensures a minimum pulling speed of 0.03mm/h and a rotation speed of 1 rpm. The stainless steel water-cooled chamber, paired with a vacuum pump, can achieve a maximum vacuum of 3.75e-5 torr. It is designed to grow various oxides, metals, and other materials, such as sapphire, GGG, YAG, LaAlO3, Si, Ge, Cu, and more.

Customization for special technical requirements is available. 

SPECIFICATIONS:

Feature	Induction heating up to 2100°C Upper weighing system for better growth control Water-cooled stainless steel vacuum chamber Pyrometer temperature measurements
Power	460-480 VAC, 3 phase, 50/60 Hz, 40 kVA 380-415 VAC, 3 phase, 50/60 Hz, 40 kVA
Induction Heating	Power 35 kW Frequency 1-20 kHz Duty cycle 100%
Vacuum Chamber	304 SS water-cooled vacuum chamber Chamber size Ø500×700 mm Observation window 80×300 mm -0.1-0.5MPa mechanical diaphragm pressure gauge 1/4" gas inlet and outlet Pressure relief valve, < 3 psig
Ultimate Vacuum	3.75e-5 torr
Temperature Measurement	Pyrometer for temperature measurement of the melt.  Measurement range 100-3000°C Eurotherm 3000 series temperature controller
Pulling Mechanism	Travel distance 200 mm Pulling speed 0.03 - 30 mm/hr Rotation speed 1 - 60 rpm
Auxiliary Growth Weighing System	Upper weighing system with Eurotherm PID control module for consistent and reproducible crystal growth Capacity 5000 g Accuracy 0.1 g
Control System	Integrated LabVIEW software for control, monitoring, and data logging.  Programmable multi-segment pulling/rotation speed control Pressure monitoring and alarm Induction power control  Weighting system with PID parameters Data logging
Crucible (Optional)	Crucible is not included in the standard configuration Maximum crucible size Ø100×80 mm Maximum crystal size, Ø50×100 mm Please contact MTI for larger crystal growth, up to 4"
Vacuum Pump (Optional)	Mechanical pump YTP550 Turbo Pump
Water Cooling (Optional)	Water cooling is optional but required. MTI recommends getting the KJ6500 water chiller Cooling capacity 50000 Btu/hr or 14.5 kW Water flow 100 L/min Water tank reservoir 75 Litres
Compliance	CE certified NRTL certification is available upon request at an extra cost