Czochralski growth, also called the Czochralski method or technique, is a method for growing high-quality single crystals of various materials.The process starts with melting the desired material’s crystal in a quartz crucible. A small seed crystal, with the desired crystallographic orientation, is then dipped into the molten material. By slowly pulling the seed upwards while simultaneously rotating it, a thin layer of liquid is created around the seed. Through careful control of the temperature, pulling speed and rotation rate, a large, high-quality single crystal can be grown from the seed. This crystal will inherit the same crystallographic structure as the seed crystal.
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HT-CZ is a CZ crystal growth system up to 2100℃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 | l Induction heating up to 2100°C l Upper weighing system for better growth control l Water-cooled stainless steel vacuum chamber l Pyrometer temperature measurements |
Power | l 480 (or 400) VAC, 3 phase, 50/60 Hz, 40 kW |
Induction Heating | l Power 35 kW l Frequency 1-20 kHz l Duty cycle 100% |
Vacuum Chamber | l 304 SS water-cooled vacuum chamber l Chamber size Ø500×700 mm l Observation window 80×300 mm l -0.1-0.5MPa mechanical diaphragm pressure gauge l 1/4" gas inlet and outlet l Pressure relief valve, < 3 psig |
Ultimate Vacuum | l 3.75e-5 torr |
Temperature Measurement | l Pyrometer for temperature measurement of the melt. l Eurotherm 3000 series temperature controller |
Pulling Mechanism | l Travel distance 200 mm l Pulling speed 0.03 - 30 mm/hr l Rotation speed 1 - 60 rpm |
Weighing System | l Upper weighing system with Eurotherm PID control module for consistent and reproducible crystal growth l Capacity 5000 g l Accuracy 0.1 g |
Control System | l Integrated software for control, monitoring, and data logging. l Programmable pulling / rotation speed l Pressure monitoring and alarm l Induction power control l Weighting system with PID parameters l Data logging |
Crucible System (Optional) | l Maximum crucible size Ø100×80 mm l Maximum crystal size, Ø2"×100 mm |
Cold Crucible Growth System (Optional) | l The system is also compatible with cold crucible crystal growth for up to 2" l Additional cold crucible sample holder l Additional high-frequency induction power supply l Additional water chiller for cold crucible cooling only |
Vacuum Pump (Optional) | l Mechanical pump l Turbo Pump |
Water Cooling (Optional) | l Water cooling is optional but required. l HT recommend getting KJ6500 water chiller l Cooling capacity 50000 Btu/hr or 14.5 kW l Water flow 100 L/min |
HT-CZ is a CZ crystal growth system up to 2100℃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 | l Induction heating up to 2100°C l Upper weighing system for better growth control l Water-cooled stainless steel vacuum chamber l Pyrometer temperature measurements |
Power | l 480 (or 400) VAC, 3 phase, 50/60 Hz, 40 kW |
Induction Heating | l Power 35 kW l Frequency 1-20 kHz l Duty cycle 100% |
Vacuum Chamber | l 304 SS water-cooled vacuum chamber l Chamber size Ø500×700 mm l Observation window 80×300 mm l -0.1-0.5MPa mechanical diaphragm pressure gauge l 1/4" gas inlet and outlet l Pressure relief valve, < 3 psig |
Ultimate Vacuum | l 3.75e-5 torr |
Temperature Measurement | l Pyrometer for temperature measurement of the melt. l Eurotherm 3000 series temperature controller |
Pulling Mechanism | l Travel distance 200 mm l Pulling speed 0.03 - 30 mm/hr l Rotation speed 1 - 60 rpm |
Weighing System | l Upper weighing system with Eurotherm PID control module for consistent and reproducible crystal growth l Capacity 5000 g l Accuracy 0.1 g |
Control System | l Integrated software for control, monitoring, and data logging. l Programmable pulling / rotation speed l Pressure monitoring and alarm l Induction power control l Weighting system with PID parameters l Data logging |
Crucible System (Optional) | l Maximum crucible size Ø100×80 mm l Maximum crystal size, Ø2"×100 mm |
Cold Crucible Growth System (Optional) | l The system is also compatible with cold crucible crystal growth for up to 2" l Additional cold crucible sample holder l Additional high-frequency induction power supply l Additional water chiller for cold crucible cooling only |
Vacuum Pump (Optional) | l Mechanical pump l Turbo Pump |
Water Cooling (Optional) | l Water cooling is optional but required. l HT recommend getting KJ6500 water chiller l Cooling capacity 50000 Btu/hr or 14.5 kW l Water flow 100 L/min |
