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HOME > Products > IR Image Furnace > Ultra High Purity Single Crystal Growth [IR Image Furnace]

Ultra High Purity Single Crystal Growth [IR Image Furnace]

Heating achieved by focusing radiation from a lamp using elliptical mirrors.

Application

Single crystal growth of :
high temperature superconductors
dielectric and magnetic materials
pure metals and metallic compounds

Features
Capable of high-temperature operation free of contamination from a hot crucible. Extremely high purity can be achieved.
User-selectable atmosphere and pressure.
Viewing screen allows monitoring of crystal growth process.
Specifications
Model No. SC1
MDH11020 MDH20020
Temp. range Max. 2050°C
1.5kW ~ 2pcs
Max. 2150°C
3.5kW ~ 2pcs
Furnace Type Double elliptic mirrors
Size Standard (Medium)
Crystal diameter (ex.) φ6 (Al2O3 + Cr2O3) φ8 (MgAl2O4 + CoO)
Shaft Drive Lower stroke 150mm
Upper stroke 250mm
Growth of crystals
(Low speed)
0.5 - 50mm/hr
Gap sdjustment
(Middle speed)
1 - 300mm/min
Preparatory operation
(High speed)
300mm/min
Rotation rate 5 - 60r/min (50Hz)
Lamp Power Power supply DC110V, 20A ~ 2sets DC200V, 20A ~ 2sets
DC power supply 0.005% of span + 3mV
Total stability ± 0.1% of span
Atmosphere Pressure Max. 300kPa standard (option 970kPa)
Flow rate 0.5 - 5 L/min N2 Gas (Flow meter included)
Dimensions (mm) Main unit 1140W ~ 1170D ~ 2250H
PC rack 600W ~ 625D ~ 1200H
DC power supply Built into main unit
Control Box Built into main unit
Ceiling height Approx. 2700mm
Utilities Power supply
(50/60Hz)
φ3 AC200V 60A φ3 AC200V 75A
Water Approx. 5 - 8 L/min
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Model No. SC2
EDH11020 MDH11020 MDH20020
Temp. range Max. 2050°C Max. 2150°C
Furnace Type Double elliptic mirrors
Size Small (E) Standard (Medium)
Crystal diameter (ex.) φ6 (Al2O3 + Cr2O3) φ8 (MgAl2O4 + CoO)
Shaft Drive Lower stroke 150mm
Upper stroke ± 25mm
Growth of crystals
(Low speed)
1.0 - 20mm/hr
Gap sdjustment
(Middle speed)
Low speed : 0.15 - 2.9mm/hr
High speed : 22mm/min
Preparatory operation
(High speed)
100mm/min (50Hz)
Rotation rate 5 - 60r/min (50Hz)
Lamp Power Power supply DC110V, 20A - 2sets DC200V, 20A - 2sets
DC power supply 0.005% of span + 3mV
Total stability ± 0.1% of span
Atmosphere Pressure Max. 300kPa (option 970kPa)
Flow rate 0.5 - 5 L/min N2 Gas (Flow meter included)
Dimensions (mm) Main unit 1000W ~ 1000D ~ 1800H
PC rack 600W ~ 825D ~ 1200H
DC power supply 630W ~ 510D ~ 700H 430W ~ 500D ~ 610H
- 2 units
Control Box Built into main unit
Ceiling height Approx. 2400mm
Utilities Power supply
(50/60Hz)
φ3 AC200V 60A φ3 AC200V 75A
Water Approx. 5 - 8 L/min
Option
Name Outline
Hydrostatic press unit For compressing powder to rod-shape specimen.
Mass flow controller A mass flow controller can be supplied for mixing two different gases for use in the crystal growth.
Cold trap Using the cold trap helps keep the quartz tube free of contamination due to evaporants. This ensures stable heating performance during single-crystal growth.
The cold trap is particularity effective for highly volatile materials.

[Results]
Without Cold trap, it is in some cases necessary to the adjust the power of the lamps frequently during the crystal growth because of the gradual contamination of the quartz tube.
Cold trap improves the stability of the crystal-growth condition by keeping the quartz tube clean.

Cold trap helps to prolong the lifetime of a quartz tube, thus cutting down the running cost.
[ Actual example for growing single crystals of Sr2RuO4 ]
Before using Cold trap (repeatable usage of a quartz tube: 4 to 5 times)
After using Cold trap (repeatable usage of a quartz tube: more than 10 times)
[ Actual example for growing single crystals of Sr3Ru2O7 ]
Before using Cold trap (repeatable usage of a quartz tube: 2 to 3 times)
After using Cold trap (repeatable usage of a quartz tube: 8 to 9 times