HTTF-1200-CGF crystal growth furnace is a compact crystal grower for both CZ and Bridgeman methods up to 1100°C. The precision pulling & rotation mechanism is built on a compact two-zone vertical tube furnace with 2" quartz tube and vacuum-sealed flange, which can pull a single crystal from a melt in the crucible via seed or move down to grow the crystal.
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HTTF-1200-CGF crystal growth furnace is a compact crystal grower for both CZ and Bridgeman methods up to 1100°C. The precision pulling & rotation mechanism is built on a compact two-zone vertical tube furnace with 2" quartz tube and vacuum-sealed flange, which can pull a single crystal from a melt in the crucible via seed or move down to grow the crystal via a capillary.
Crystal growth furnace can be upgrade to a vacuum-sealed quartz tube and a hermetic pulling mechanism since Jan 5, 2021, which is compatible with volatile materials and growth in a controlled atmosphere.
Reference article: Advanced Materials - 2023 - Du - Robust Thermal Neutron Detection by LiInP2Se6 Bulk Single Crystals, in which the Hybrid Compact Crystal Grower HTTF-1200X-SCB was used for LiInP2Se6 Bulk Single Crystals Growth.
Power | Voltage: 110V or 208-240 VAC, single phase, 50/60Hz Furnace: 1.5 kW @ 110VAC; 2.3 kW @ 208-240VAC. Please specify working voltage before order. Vacuum Pump: 400W (EQ-FYP-PUMP-110) Water Chiller: 620W (KJ5000, optional) |
Vertical Tube Furnace | Double-layer steel structure with air cooling Split door design for easy installation of tube 2" dia quartz tube with vacuum-sealed rotation and pulling mechanism. Two-zone heating with 100mm L for each zone (200 mm in the total heating zone) The Max. 1100°C working temperature Max temperature gradient is about 10ºC/cm within 60 mm length Precision phase-angle fired temperature control with +/- 0.1 ºC accuracy (Eurotherm controller) |
Quartz Tube and Flanges | Quartz Tube size: 50mm OD x 44 mm ID x 600 mm L Top flange: water-cooled flange with a needle valve and a KF25 port for rotation and pulling mechanism. Bottom flange: flange with a needle valve and KF25 port for connection to a vacuum pump. Two 1/4" tube fitting for gas circulation or flow. |
Pulling Mechanism | Travel is driven by precision servo motor Pulling Speed: 0.5 - 50 mm/h Pulling Rod Rotation Speed: 0.1 - 23 RPM Travel distance: 0 - 300 mm Faster travel: 35 mm/min |
Czocharalski Method | One 300 mm length alumina tube is put on the bottom flange to support an alumina crucible for CZ crystal pulling One pulling rod made of tool steel is included for mounting seed crystal up to 800°C. Another pulling rod material is available upon request. Seed crystal diameter: 0.5-3.2 mm Alumina crucible: 25 OD×20 ID×25 H mm |
Bridgeman Method | Two fixtures made of stainless steel are included for mounting quartz tubes. Half-end quartz tube: 20 OD×16 ID×150 H, mm Half-end quartz tube: 15 OD×11 ID×150 H, mm Note: SS fixture may be oxidized at T > 800°C For volatile elements, the sample shall be sealed in a quartz tube using a tool For Bridgeman growth w/o atmosphere control, please consider our other crystal growth furnace or remove the quartz tube for easy sample installation |
Temperature Control and Profile | Two Eurotherm temperature controllers with two K-type thermocouples are builtin with +/- 0.1ºC accuracy. 28 segments programmable with PID adjustable for two heating zone independently. RS485 port and software is ready for PC remote control Note: It is the customer's responsibility to create a suitable thermal gradient for crystal growth. |
Vacuum Pump and | 10E-2 torr via dual-stage mechanical vacuum pump 10E-5 torr via Turbopump The vacuum pump is optional. For oxygen-sensitive material, suggest using a recirculating gas purification system (H2O, O2 < 1 ppm) to replace the turbopump |
Water Chiller (Optional) | A water chiller is required to prevent top flange overheating but it is not included in the standard package. |
Dimension & Weight | Weight: 105 kg Size: L×W×H: 860 mm×740 mm×2160 mm |
Shipping Weight & Dimensions | 550 lbs, 47" x 40" x 95" 155 lbs, 47" x 27" x 28" |
Warranty | One-year limited warranty and lifetime technical support |
HT crystal growth furnace is providing the two most important parameters necessary for critical growth: stability and control. Both are necessary to achieve consistency, repeatability, and uniformity – the keys to successful crystal growth in the laboratory and in production.
Stability provides the crystal grower with a known and constant environment for demanding crystal growth. Stability assures uniform, tightly defined temperatures and thermal gradients for consistent melts and zone refining. Stability requires well-controlled gaseous or vacuum environments. Stability in crystal growth demands smooth, highly constant, vibration-free motions with large and dynamic ranges, programmable first and second derivatives and multi-axis configurations – yet all must be controlled.
HTTF-1200-CGF crystal growth furnace is a compact crystal grower for both CZ and Bridgeman methods up to 1100°C. The precision pulling & rotation mechanism is built on a compact two-zone vertical tube furnace with 2" quartz tube and vacuum-sealed flange, which can pull a single crystal from a melt in the crucible via seed or move down to grow the crystal via a capillary.
Crystal growth furnace can be upgrade to a vacuum-sealed quartz tube and a hermetic pulling mechanism since Jan 5, 2021, which is compatible with volatile materials and growth in a controlled atmosphere.
Reference article: Advanced Materials - 2023 - Du - Robust Thermal Neutron Detection by LiInP2Se6 Bulk Single Crystals, in which the Hybrid Compact Crystal Grower HTTF-1200X-SCB was used for LiInP2Se6 Bulk Single Crystals Growth.
Power | Voltage: 110V or 208-240 VAC, single phase, 50/60Hz Furnace: 1.5 kW @ 110VAC; 2.3 kW @ 208-240VAC. Please specify working voltage before order. Vacuum Pump: 400W (EQ-FYP-PUMP-110) Water Chiller: 620W (KJ5000, optional) |
Vertical Tube Furnace | Double-layer steel structure with air cooling Split door design for easy installation of tube 2" dia quartz tube with vacuum-sealed rotation and pulling mechanism. Two-zone heating with 100mm L for each zone (200 mm in the total heating zone) The Max. 1100°C working temperature Max temperature gradient is about 10ºC/cm within 60 mm length Precision phase-angle fired temperature control with +/- 0.1 ºC accuracy (Eurotherm controller) |
Quartz Tube and Flanges | Quartz Tube size: 50mm OD x 44 mm ID x 600 mm L Top flange: water-cooled flange with a needle valve and a KF25 port for rotation and pulling mechanism. Bottom flange: flange with a needle valve and KF25 port for connection to a vacuum pump. Two 1/4" tube fitting for gas circulation or flow. |
Pulling Mechanism | Travel is driven by precision servo motor Pulling Speed: 0.5 - 50 mm/h Pulling Rod Rotation Speed: 0.1 - 23 RPM Travel distance: 0 - 300 mm Faster travel: 35 mm/min |
Czocharalski Method | One 300 mm length alumina tube is put on the bottom flange to support an alumina crucible for CZ crystal pulling One pulling rod made of tool steel is included for mounting seed crystal up to 800°C. Another pulling rod material is available upon request. Seed crystal diameter: 0.5-3.2 mm Alumina crucible: 25 OD×20 ID×25 H mm |
Bridgeman Method | Two fixtures made of stainless steel are included for mounting quartz tubes. Half-end quartz tube: 20 OD×16 ID×150 H, mm Half-end quartz tube: 15 OD×11 ID×150 H, mm Note: SS fixture may be oxidized at T > 800°C For volatile elements, the sample shall be sealed in a quartz tube using a tool For Bridgeman growth w/o atmosphere control, please consider our other crystal growth furnace or remove the quartz tube for easy sample installation |
Temperature Control and Profile | Two Eurotherm temperature controllers with two K-type thermocouples are builtin with +/- 0.1ºC accuracy. 28 segments programmable with PID adjustable for two heating zone independently. RS485 port and software is ready for PC remote control Note: It is the customer's responsibility to create a suitable thermal gradient for crystal growth. |
Vacuum Pump and | 10E-2 torr via dual-stage mechanical vacuum pump 10E-5 torr via Turbopump The vacuum pump is optional. For oxygen-sensitive material, suggest using a recirculating gas purification system (H2O, O2 < 1 ppm) to replace the turbopump |
Water Chiller (Optional) | A water chiller is required to prevent top flange overheating but it is not included in the standard package. |
Dimension & Weight | Weight: 105 kg Size: L×W×H: 860 mm×740 mm×2160 mm |
Shipping Weight & Dimensions | 550 lbs, 47" x 40" x 95" 155 lbs, 47" x 27" x 28" |
Warranty | One-year limited warranty and lifetime technical support |
HT crystal growth furnace is providing the two most important parameters necessary for critical growth: stability and control. Both are necessary to achieve consistency, repeatability, and uniformity – the keys to successful crystal growth in the laboratory and in production.
Stability provides the crystal grower with a known and constant environment for demanding crystal growth. Stability assures uniform, tightly defined temperatures and thermal gradients for consistent melts and zone refining. Stability requires well-controlled gaseous or vacuum environments. Stability in crystal growth demands smooth, highly constant, vibration-free motions with large and dynamic ranges, programmable first and second derivatives and multi-axis configurations – yet all must be controlled.
