Hall Measurement System
HMS-3000/3300
Ȧ È¿°ú ÃøÁ¤ ½Ã½ºÅÛÀº, ¹ÝµµÃ¼ µð¹ÙÀ̽ºÀÇ Àü±âÀûÀΠƯ¼ºÆľǿ¡ ÇÊ¿äÇÑ, ij¸®¾î ³óµµ(carrier density), À̵¿µµ(mobility),
ÀúÇ×À²(resistivity), Ȧ °è¼ö(Hall Coefficient)µîÀ» ÃøÁ¤Çϴµ¥ ¸Å¿ì À¯¿ëÇÑ Àåºñ ÀÔ´Ï´Ù.
µû¶ó¼, ¹ÝµµÃ¼ µð¹ÙÀ̽ºÀÇ Àü±âÀûÀΠƯ¼ºÀ» ÃøÁ¤Çϴµ¥ ¸Å¿ì ÇʼöÀûÀÎ Àåºñ ÀÔ´Ï´Ù.
HMS ½Ã¸®Áî´Â Á¤Àü·ù¼Ò½º(constant current source), ¹Ý µ¥¸£ Æ÷ ¹ýÄ¢(Van der Pauw technique)À»
ÀÌ¿ëÇÑ ´ÜÀÚÀüȯ ÀåÄ¡, Àú¿Â(¾×üÁú¼Ò¿Âµµ,77K) ÃøÁ¤ ½Ã½ºÅÛ, Àڼӹеµ Àΰ¡ ½Ã½ºÅÛ µîÀ¸·Î ±¸¼ºÀÌ µË´Ï´Ù.
µû¶ó¼, Ȧ È¿°ú ÃøÁ¤¿¡ ÇÊ¿äÇÑ ¸ðµç ½Ã½ºÅÛ(¾Ç¼¼¼¸® Æ÷ÇÔ) À» ¿ÏÀüÇÑ Ç®¼ÂÀ¸·Î, ÇÕ¸®ÀûÀÎ °¡°Ý¿¡ Á¦°øÇÏ°í ÀÖ½À´Ï´Ù. ±×¸®°í,
Ȧȿ°ú ÃøÁ¤ÀåÄ¡¿¡ ´ëÇؼ ±¹³»¿Ü ƯÇ㸦 ÃëµæÇÏ¿´À¸¸ç, Àü¼¼°è ´ëÇÐ, ¿¬±¸¼Ò, ±â¾÷µî 500¿©´ë ÀÌ»óÀÌ ¼³Ä¡µÇ¾ú°í, °í°´µé·ÎºÎÅÍ
±â¼ú·ÂÀ» ÀÎÁ¤¹Þ°í ÀÖ½À´Ï´Ù.
1. CHARACTERISTICS
1.¹ÝµµÃ¼ µð¹ÙÀ̽ºÀÇ Àü±âÀûÀΠƯ¼ºÀ» ÆľÇÇϱâ À§Çؼ Á¤¹Ð¼º°ú ÀçÇö¼ºÀ» È®º¸.
Á¤Àü·ù¸¦ 6´Ü°è·Î ³ª´²¼ Àΰ¡(1nA ~20mA) ÇÔÀ¸·Î½á ¿¡·¯Çã¿ëÄ¡¸¦ ÃÖ¼ÒÈÇÕ´Ï´Ù. 4 point probing ¹æ½ÄÀÇ À¯È¿ÇÑ
¹Ý µ¥¸£ Æ÷ ¹ýÄ¢(Van der pauw technique) À» Àû¿ëÇÏ¿© ÃøÁ¤ÀÇ Á¤¹Ð¼ºÀ» º¸Àå ÇÏ¿´½À´Ï´Ù.
2.ÄÄÆÑÆ®ÇÑ µ¥½ºÅ©Å¾ µðÀÚÀÎ, »ç¿ëÀÌ Æí¸®ÇÔ.
ÀÛ°í ÄÄÆÑÆ®ÇÑ Àڼӹеµ Àΰ¡ ½Ã½ºÅÛ°ú Àú¿Â(¾×üÁú¼Ò¿Âµµ, 77K) ÃøÁ¤ ½Ã½ºÅÛÀ» ÀÌ¿ëÇÏ¿©, »ç¿ëÀÌ Æí¸®ÇÕ´Ï´Ù.
´Ù¾çÇÑ Á¾·ùÀÇ »ùÇø¶¿îÆà º¸µå¸¦ ÅëÇؼ, ´Ù¾çÇÑ »çÀÌÁî¿Í µÎ²²ÀÇ »ùÇý÷Ḧ ÃøÁ¤ÇÒ ¼ö ÀÖ½À´Ï´Ù. 5mm x 5mm ~ 30mm
x 30mm »çÀÌÁî, µÎ²²: 5.5mm ¸Æ½Ã¸Ø(maximum).
3.Àü·ù vs Àü¾Ð ±×·¡ÇÁ, Àü·ù VS ÀúÇ× ±×·¡ÇÁ.
HMS2000 ¸ðµ¨¿¡¼´Â ÀÌ ±â´ÉÀ» Áö¿øÇÏÁö ¾Ê½À´Ï´Ù. HMS3000¸ðµ¨ ÀÌ»ó ¿¡¼´Â ¸ðµÎ ÀÌ ±â´ÉÀ» Áö¿øÇÕ´Ï´Ù.
4.´Ù¾çÇÑ ÃøÁ¤ °á°ú ÆĶó¹ÌÅÍ( characteristic parameter) Á¦°ø.
ÃøÁ¤ÀÌ ³¡³ª¸é Çѹø¿¡ ´Ù¾çÇÑ ÃøÁ¤ °á°ú°ªÀÌ ÀÚµ¿À¸·Î °è»ê µÇ¾î¼ s/w ÇÁ·Î±×·¥¿¡ ´ÙÀ½°ú °°ÀÌ ³ªÅ¸³³´Ï´Ù. Bulk &
Sheet Carrier Concentration, À̵¿µµ(Mobility), ÀúÇ×·ü(Resistivity), Conductivity,
Ȧ °è¼ö(Hall Coefficient), Magnetoresistance), Alpha(Vertical/Horizontal
ratio of resistance) and etc.
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PCB Sample Holder
(6mmx6mm, 20mmx20mm) |
Magnetic flux density
input system
0.55T, 1.0T |
Low Temperature
Measurement System
(77K, 300K) |
The SPCB-1 Spring Clip Board does not require the usual sample bonding process invoving the use of small wires.
The Spring Clip Board is for use with the 0.55 Tesla magnet kit (not the 1.0T) and it has spring loaded clips and spring loaded tips to make contact without using bonding wires. (When using the Spring Clip Board, usually the contacts must still be annealed with a conductive material such as indium to insure good probe contact) |
(Ŭ¸¯ÇϽøé Ä«´Ù·Î±×¸¦ º¼¼ö ÀÖ½À´Ï´Ù.) |
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The SPCB-2 Spring Clip Board is for mounting thicker samples that are from 2mm up to 4.5mm in thickness. |
Product Composition
- Constant current source supply system
- Sample measurement case
- Permanent magnet set
- Hall Effect Measurement Program (Windows)
- Funnel for liquid nitrogen
Features
- Low and high resistivity measurement capability, bulk and sheet carrier concentration and mobility, Hall coefficient in semiconductors
- DC measurement modes
- van der Pauw and Hall Bar measurements
- Board system (room temperature or 77K)
Specifications:
- General
- Maximum sample size (Small board) - 6mm x 6mm, (Large Board/Spring Clip Board) - 20mm x 20mm.
- Measurement Temperature: 300K (room temperature), 77K (Liquid Nitrogen)
- Cool-down time: 10sec.
- Measurement Material: All semiconductors including Si, SiGe, SiC, GaAs, InGaAs, InP, GaN (N Type & P Type can be measured).
Data input of depth enables comprehensive measurement of the whole material.
- Resistivity Range of HMS-3000: 10 -4 to 10 7 (Ohms-cm)
- Magnet: Permanent magnet (diameter: 30 mm)
- Magnet Flux Density: 0.55 Tesla nominal +/-1% of marked value (Optional 1 Tesla sample kit for 300K testing only)
- Stability: 2% over 1 years
- Uniformity: +/- 1% over 20mm diameter from center
- Pole Gap: 26 mm
- Hall voltage range: 10uV to 2000mV
- Mobility: (cm 2 /Volt-sec) 2 ~ 10 7 (including low temperature)
- Density (cm -3 ): 10 7 ~ 10 21
- Standard field strength 0.55 Tesla, Optional field strengths 0.27T, 0.31T, 0.37T, 1.0 Tesla (300K testing only).
- Size (W ¡¿ D ¡¿ H): 320 x 300 x 105 mm (Constant Current Supply System)
- Weight: 7.7kg (without shipping packaging)
- Packed in overseas wooden crate, Weight: 18.5 Kg, Dimensions: 23" x 18" x 19"
- Current source:
- Range: (HMS-3000) 1nA-20mA
- Compliance: 12V
- Voltage measurements:
- Input impedance: 2x107
- Input voltage range: +/-12V
- Sample input: Sample board
- Contact switching: Mechanical Relay
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°æÀï»ç Á¦Ç°°úÀÇ ÃøÁ¤ µ¥ÀÌÅÍ ºñ±³
0.55 Tesla (Standard) |
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0.55T Sample Holder with lid and sample board removed, showing magnet set and LN2 reservoir.
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1.0 Tesla (Optional) |
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Ecopia offers a 1.0 Tesla permanent magnet sample holder kit with lid for use at room temperature only.
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Ecopia offers the 300 o C variable temperature HT55T Heated Stage Sample Kit with two 0.55T magnets and the Easy-Slide ball bearing stage.
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Sample boards for bonding/testing samples:
- For use with <6mm x 6mm samples (5 pcs included with HMS system)
- For use with <20mm x 20mm samples (5 pcs included with HMS system)
- For use with socketed IC's (not normally included, but available upon request)
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Screen-shot showing HMS-3000 Software
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Screen-shot showing IV Curve software
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Another image of the HMS-3000 which lists the included materials
Click photo to see a larger image
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White Papers that mention the use of the HMS-3000: The following papers are copyrighted materials that you can find on the web by searching for the name using google. Include the quotation marks in your google search. Once you have purchased the PDF document, you can search in the documment for "HMS" to find the reference:
"Preparation and Properties of Multiwalled Carbon Nanotube/Polycaprolactone Nanocomposites"
"Structure, optical, and electrical properties of indium tin oxide thin films prepared by sputtering at room temperature and annealed..."
"Sintering behaviors and electrical properties of transparent conducting..."
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