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[½»Á÷] ¡¾ÌÖÂÛ¡¿´ÅÐÔ²ÄÁÏÄζûζÈ

¿´µ½Ò»ÆªÎÄÕÂ˵YMnO3£¬ÔÚÄζûζÈÏÂ×Ô·¢´Å»¯ºÍ´ÅÖÍÏÖÏóÔÚÄζûζÈ϶¼½«Ïûʧ£¬Õâ¾ä»°ÔõôÀí½â°¡£¿"that spontaneous magnetization and
hysteresis phenomenon all vanish below TN¡°¡£Ó¦¸ÃÊÇζȸßÓÚÄζûζÈÒÔÉÏ£¬´Å×Ô·¢ÏÖÏóÏûʧ°É£¬Ìú´Åת±ä³É˳´Å°É£¿
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2Â¥2010-01-17 19:53:08
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

cordierite

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ÓÅÐ㣡£¡ÓÐľÓУ¡£¡£¡ÓÅÐ㣡£¡ÓÐľÓУ¡£¡£¡ÓÅÐ㣡£¡ÓÐľÓУ¡£¡£¡ÓÅÐ㣡£¡ÓÐľÓУ¡£¡£¡

ÒýÓûØÌû:
Originally posted by ÔÚÌìÑÄ at 2010-1-17 19:53:
ÊDz»ÊǶ³½áÁË£¿×îºÃ°ÑǰºóÀïÁ½¸ö¾ä×ÓÒ²ÌùÉÏ£¬ÕâÑù¸ü¿ÉÒÔ¿´Ã÷°×

Fig. 7 shows the M¨CH hysteresis loops of YMnO3 ceramics
at different temperatures. Above 40 K, no magnetic hysteresis
loops are detected in the magnetic-ordered temperature range,
suggesting the antiferromagnetic nature of YMnO3. In addition,
an obvious magnetic hysteresis loop is observed at 25 K, with
remnant magnetization (Mr) of 0.24 emu/g and a coercive field
It indicates a weak ferromagnetic characteristic,
in good agreement with the susceptibility measurement
results. This differs from the previous magnetism studies of
YMnO3, which showed that spontaneous magnetization and
hysteresis phenomenon all vanish below TN [5].
3Â¥2010-01-22 12:10:32
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
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