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2-8D2. ÃÊÀüµµÃ¼
(Superconductivity)

(Last Updated 2010/9/7)
1. °³¿ä

ÃÊÀüµµÃ¼(Superconductor)ÀÇ °¡Àå Àß ¾Ë·ÁÁø ¼ºÁúÀº ¹°ÁúÀÌ ¼ÒÀ§ ÀÓ°è¿Âµµ(critical temperature), Tc ÀÌÇÏ·Î ³Ã°¢µÉ ¶§ ¸ðµç Àü±âÀúÇ×ÀÌ °©Àڱ⠻ç¶óÁø´Ù´Â °ÍÀÌ´Ù. ÃÊÀüµµÃ¼ÀÇ ¹Ý ÀÚ¼ºÀû ¼ºÁúÀº ¿ªÇÐÀûÀ¸·Î ¸î°¡Áö Àç¹ÌÀÖ´Â °á°úµéÀ» °®°í ÀÖ´Ù. »óÀÚ¼ºÃ¼(paramagnetic material)³ª °­ÀÚ¼ºÃ¼(ferromagnetic material)´Â ±× ¹°Áú³»¿¡ ÀÖ´Â ÀÚ±â½Ö±ØÀÚ°¡ ¿µ±¸ÀÚ¼®ÀÇ ºñ±ÕÁú ÀÚ±âÀå°ú Á¤·ÄÇϱ⠶§¹®¿¡ ¿µ±¸ÀÚ¼®¿¡ ²ø¸°´Ù. ±×·¯³ª ¹ÝÀÚ¼ºÃ¼¿¡¼­ ÀÚ±âÈ­´Â ¹Ý´ë¹æÇâÀ» ÇâÇϹǷΠ¹ÝÀÚ¼ºÃ¼´Â ¿µ±¸ÀÚ¼®¿¡ ÀÇÇØ ¹Ý¹ßÇÏ°í ´ºÆ°ÀÇ Á¦3¹ýÄ¢(ÀÛ¿ë ¹ÝÀÛ¿ë)¿¡ ÀÇÇØ ÀÚ¼®Àº ¹ÝÀÚ¼ºÃ¼¿¡ ÀÇÇØ ¹Ý¹ßµÈ´Ù. »çÁøÀº °í¿Â ÃÊÀüµµÃ¼ Á¶°¢°ú ÀÚ¼®»çÀÌÀÇ ¹Ý¹ß·Â¿¡ÀÇÇØ °øÁß¿¡ ¶° ÀÖ´Â ÀÚ¼®ÀÇ ¸ð½ÀÀ» º¸¿©ÁÖ°í ÀÖ´Ù.

ÃÊÀüµµÃ¼´Â Àå°Å¸® Àü·Â¼ÛÀü°ú ¹ßÀü±â, Àüµ¿±â ¹× º¯¾Ð±â¸¦ Æ÷ÇÔÇÏ´Â ¿¡³ÊÁö º¯È¯±â±â¿¡ ¸Å·ÂÀûÀÌ´Ù. ÃÊÀüµµ¾çÀÚ°£¼·ÀåÄ¡(Superconducting quntum interferance devices, SQUIDs)¸¦ ÀÌ¿ëÇÏ¿© ¸Å¿ì ´Ï°¨ÇÏ°Ô ÀÚ±âÀåÀ» ÃøÁ¤ÇÒ ¼ö Àִµ¥ 10-15 Wb º¸´Ù ÀÛÀº Àڱ⼱¼ÓÀÇ º¯È­¸¦ ÃøÁ¤ÇÒ ¼ö ÀÖÀ¸¸ç ÀÇÇÐ ÁöÁúÇÐ ¹× ±âŸ ´Ù¸¥ ºÐ¾ß¿¡ ÀÀ¿ëµÈ´Ù.
 
[Âü°í] Ch29, 1018p, University Physics 12th ed. by Young & Freedman.

2. ½ÇÇè±â±¸ ¹× ÀåÄ¡

  (1) YBCO ÃÊÀüµµÃ¼
  (2) ÀÚ¼®
  (3) ÇɼÂ(tweezer)
  (4) ¾×üÁú¼Ò(liquid nitrogen)


3. ½ÇÇè¹æ¹ý


 (1) ¿ë±â¿¡ ÃÊÀüµµÃ¼¸¦ ³õ°í ¾×üÁú¼Ò¸¦ ³ÖÁö ¾ÊÀº »óÅ¿¡¼­ ÀÚ¼®Á¶°¢À» ÃÊÀüµµÃ¼ÀÇ Áß¾Ó À§¿¡ ¿Ã·Áº¸ÀÚ. ÀÚ¼®°ú ÃÊÀüµµÃ¼ÀÇ ¹ÝÀÀÀº ¾î¶°ÇÑ°¡? À̶§ ÃÊÀüµµÃ¼À§¿¡ ÀÚ¼®ÀÌ ¶³¾îÁ® ±úÁöÁö ¾Êµµ·Ï ÁÖÀÇ! 

 (2) ÀÚ¼®À» »©³»°í º°µµÀÇ ÀúÀå¿ë±â µî¿¡ µé¾îÀÖ´Â ¾×üÁú¼Ò¸¦ ÃÊÀüµµÃ¼°¡ Àá±æ Á¤µµ·Î Á¶½É½º·´°Ô º×´Â´Ù.
 
[¾×üÁú¼Ò »ç¿ë ÁÖÀÇ]

(1) ±ØÀú¿ÂÀÇ ¾×üÁú¼Ò´Â ÇǺο¡ ´ÙÀ» °æ¿ì È­»óÀ» ÀÔÀ» ¼ö ÀÖÀ¸¹Ç·Î ¹Ýµå½Ã ±ä¿Ê°ú ¹æÇÑ Àå°©À» Âø¿ëÇÏ°í ´Ù·ç¾î¾ß ÇÑ´Ù.

(2) ½ÇÇèÇÏ°í ³²Àº ¾×üÁú¼Ò´Â »ó¿Â¿¡¼­ ¹Ù·Î ±âÈ­µÇ¾î »ç¶óÁö¹Ç·Î ¿ÏÀüÈ÷ »ç¶óÁú ¶§±îÁö ±×´ë·Î µÎ¾ú´Ù°¡ Ä¡¿î´Ù.

(3) ¼Ò·®ÀÇ °æ¿ì´Â ÇØ°¡¾øÀ¸³ª ´Ù·®ÀÇ °æ¿ì ¹ÐÆóµÈ °ø°£¿¡¼­ ½ÇÇèÇϸ頰ø±âÁß¿¡ Áú¼Ò°¡ ¸¹¾ÆÁö¸é Áú½ÄÀÇ À§ÇèÀÌ ÀÖÀ¸¹Ç·Î ȯ±â³ª ÅëdzÀÌ Àß µÇ´Â °÷¿¡¼­ ½ÇÇèÇÑ´Ù.

 (3) ´Ù½Ã ÇɼÂÀ¸·Î ÀÚ¼®Á¶°¢À» Àâ°í ÃÊÀüµµÃ¼ Áß¾Ó À§¿¡ ÁÖÀDZí°Ô ¿Ã·Á³õ´Â´Ù. ¾×üÁú¼Ò¸¦ º×´Â °æ¿ì ÀÚ¼®ÀÌ Çã°ø¿¡ ¶ß°í ÃÊÀüµµ Çö»óÀÌ ÀϾ´Â ÀÌÀ¯¸¦ ¼³¸íÇغ¸ÀÚ.
 
¹øÈ£     ±Û Á¦ ¸ñ ¹øÈ£     ±Û Á¦ ¸ñ
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1-1D. Áø°øÀÚÀ¯³«ÇÏ
[Demo] Free Falling in Vacuum
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1-2D. Ç¥Àû ¸ÂÃß±â
[Demo] Hit the Falling Monkey
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1-3D1. À§·Î ±¸¸£´Â ¹°Ã¼
[Demo] Rolling Uphill
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1-3D2. ·Ñ·¯ÄÚ½ºÅÍ
[Demo] Roller Coaster
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1-4D1. ¼±¿îµ¿·® º¸Á¸
Conservation of Linear Momentum
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1-5D1. °æ»ç¸é ±¸¸§
[Demo] Rolling on the Inclined Plane
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1-5D2. °¢¿îµ¿·® º¸Á¸
Conservation of Angular Momentum
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1-5D3. ÀÚÀ̷θµ
[Demo] Gyro-Ring
9
1-8D. ´ÜÁøÀÚÀÇ °ø¸í
Selected Reso.of Simple Pendulums.
10
1-9D1. Æĵ¿ ¸ðÇü
Types of Mechanical Waves
11
1-9D2. À½ÆÄÀÇ °ø¸í
[Demo] Resonance of Sound
12
2-1D. Àü±âÀåÀÇ ÀÛ¿ë
[Demo] Action of Electric Field
13
2-4D. Àü·ùµµ¼± ¹× Á÷·ùÀüµ¿±â
[Demo] EMF on a Wire & DC Motor
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2-5D. ÀÚ±â·Â¼± °üÂûÀåÄ¡
[Demo] Magnetic Field Lines
15
2-6D1. ÀÚ±âÁ¦µ¿1 (±×³×Çü)
[Demo] Magnetic Damping1
16
2-6D2. ÀÚ±âÁ¦µ¿2 (³«ÇÏÇü)
[Demo] Magnetic Damping2
17
2-6D3. ¸µ ¹ß»çÀåÄ¡
[Demo] Ring Launcher
18
2-7D. ÇöóÁº¼
[Demo] Plasma Ball
19
2-8D2. ÃÊÀüµµÃ¼
[Demo] Superconductivity
20
ÀÚÀ̷νºÄÚÇÁ(¹ÙÄû)
[Demo] Gyroscope(Wheel)
21
ÀÚÀ̷νºÄÚÇÁ
[Demo] Gyroscope
22
ÁøÀÚÀÇ °¨¼âÁøµ¿(¿µ»ó)
[Demo] Damped Oscillation of Pend.
23
È£Èí·ü ÃøÁ¤
[Demo] Measure of Respiration Rate
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±Ý¹Ú °ËÀü±â
[Demo] Gold-Leaf Electroscope
25
¶óµð¿À¸ÞÅÍ
[Demo]Radiometer
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½ÉÀå¹Úµ¿·ü ÃøÁ¤
[Demo] Measure of Heart Rate
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½ÉÀüµµ ÃøÁ¤
[Demo] Electorcardiograph
28
¿­Àü º¯È¯±â
[Demo] Thermoelectric Converter
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