ÀÚ±âÇнÇÇè½Ç(MagLAB) ±¸ (old) °Ô½ÃÆÇÀÔ´Ï´Ù.

2001/12/04 (23:49) from 211.48.203.140' of 211.48.203.140' Article Number : 713
Delete Modify MagLAB (MagLAB@hitel.net) Access : 597 , Lines : 59
Re: º¸Àڷ°ú ÅõÀÚÀ²°úÀÇ °ü°è¹× »êȭöÁß¿¡¼­ ÅõÀÚÀ²....
±¸¹ÎÁ¤ wrote:
>¾È³çÇϼ¼¿ä. ÀÚ¼º¿¡ ´ëÇؼ­ ±Ã±ÝÇؼ­ ÀÌ·¸°Ô ¿©Âã´Ï´Ù.
>ÀϹÝÀûÀ¸·Î º¸Àڷ°ú ÅõÀÚÀ²ÀÇ °ü°è°¡ ¾î¶»°Ô µÇ´ÂÁö Àß ¸ô¶ó¼­¿ä..
>º¸ÀÚ·ÂÀÌ Å©¸é ÅõÀÚÀ²ÀÌ Å©´Ù°í »ý°¢µÉ ¼ö ÀÖ´ÂÁö¿ä? Ȥ½Ã °ü°èµÈ ½ÄÀÌ¶óµµ ÀÖÀ¸½É Á» °¡¸£ÃÄÁֽøé
>°¨»çÇÏ°Ú½À´Ï´Ù.
>±×¸®°í ÀϹÝÀûÀ¸·Î »êȭö
>Fe2O3 alph-form °ú gamma form Á߾°ÍÀÌ ÅõÀÚÀ²ÀÌ ÁÁÀºÁö¿ä?
>±×¸®°í Fe3O4, µîµî..¾î¶²°ÍÀÌ ÁÁÀºÁö¸¦ Á» ¾Æ½Ã¸é ¾Ë·ÁÁÖ¼¼¿ä?
>
>±âº»ÀûÀÎ Áú¹®ÀÏÁö ¸ð¸£Áö¸¸....ÀÌ·¸°Ô Áú¹®À» Çؼ­ Á˼ÛÇÕ´Ï´Ù. ¹Ù»Ú½Ã´õ¶óµµ ²À ´äº¯ ºÎŹ µå¸³´Ï´Ù.

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¾È³çÇϼ¼¿ä. MagLABÀÔ´Ï´Ù.

º» ȨÆäÀÌÁöÀÇ "ÀÚ±âÇÐ-ÀÚ±âÀ̷°"À» ¸ÕÀú ÀÐ¾î º¸½Ã±â ¹Ù¶ø´Ï´Ù.

±×·¯¸é, ÀÌÁ¦ ¼³¸íÀ» µå¸®µµ·Ï ÇÏ°Ú½À´Ï´Ù.

ÅõÀÚÀ²À̶õ ÀÚ±âÀÌ·Â °î¼±ÀÇ ±â¿ï±âÀÔ´Ï´Ù. Áï magnetic field strength (H)

°¡ º¯ÇÔ¿¡ µû¸¥ induction (ȤÀº magnetic flux density) (B) ÀÇ º¯È­À²

ÀÔ´Ï´Ù. ÅõÀÚÀ²ÀÌ Å©´Ù´Â °ÍÀº ±â¿ï±â°¡ ±ÞÇÏ´Ù´Â °ÍÀÔ´Ï´Ù. ´Ù½Ã Ç¥ÇöÇϸé

ÀÛÀº magnetic field strength (H) ÀÇ º¯È­¿¡µµ induction (B) ÀÇ º¯È­°¡

Å©´Ù´Â °ÍÀÔ´Ï´Ù.

º¸ÀÚ·ÂÀº º» ȨÆäÀÌÁö "ÀÚ±âÇÐ-ÀÚ±âÀÌ·Â °î¼±"ÀÇ ±×¸²¿¡¼­ Hc °ªÀÔ´Ï´Ù.

ÀÌÁ¦ º¸ÀÚ·ÂÀÌ Å©¸é ÀϹÝÀûÀ¸·Î ÅõÀÚÀ²ÀÌ ÀÛ´Ù´Â °ÍÀ» ½±°Ô ÀÌÇØÇÏ½Ç ¼ö

ÀÖÀ» °ÍÀÔ´Ï´Ù. Áï º¸ÀÚ·ÂÀÌ Å« ÀÚ¼ºÀç·á´Â º¸ÀÚ·ÂÀÌ ÀÛÀº ÀÛÀº ÀÚ¼ºÀç·á

º¸´Ù H °ªÀÇ º¯È­¿¡ µû¸¥ B °ªÀÇ º¯È­°¡ ÀÛ½À´Ï´Ù.

±×¸®°í ÀÌ·¯ÇÑ °ÍÀº ¾ÆÁ÷ ¼öÇÐÀûÀ¸·Î Ç®¸®Áö ¾Ê¾Ò½À´Ï´Ù. µû¶ó¼­ ÀϹÝÀûÀÎ

½ÄÀº ¾ø½À´Ï´Ù. ´Ù¸¸ ½ÇÇèÀûÀ¸·Î B-H loopÀ» ÃøÁ¤ÇÏ°í ÅõÀÚÀ²À» ÃøÁ¤ÇÕ´Ï´Ù.


Fe203 alpa formÀº Antiferromagentic Àç·áÀÌ°í, Hexagonal ¶Ç´Â Trigonal
                
                  ±¸Á¶¸¦ ÇÏ°íÀÖÀ¸¸ç,

      gamma formÀº Ferrimagnetic Àç·áÀÌ°í, Cubic ±¸Á¶¸¦ ÇÏ°íÀÖÀ¸¸ç,

Fe3O4 ´Â Ferrimagnetic Àç·áÀ̸ç, Cubic ±¸Á¶¸¦ °®°í ÀÖ½À´Ï´Ù.

ÅõÀÚÀ²Àº antiferromagntic Àç·áº¸´Ù ferrimagntic Àç·á°¡ ´õ Å®´Ï´Ù.

¶ÇÇÑ hexagonal ±¸Á¶°¡ cubic Àç·áº¸´Ù anisotropy Å©°í, Hc °ªÀÌ Ä¿¼­
 
¿µ±¸ÀÚ¼® Àç·á·Î ¸¹ÀÌ»ç¿ëµË´Ï´Ù.

µµ¿òÀÌ µÇ¼Ì±æ ¹Ù¶ø´Ï´Ù.

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