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hxr8086

木虫 (正式写手)

[交流] 【求助】请各位帮忙分析下磁性分析 已有3人参与

最近得到一个二核锰的晶体,测试了一下磁性,测试的人已经做过数据拟合了,但是我不懂磁性,不大会分析,请各位大侠帮帮给分析一下。需要说明的是两个锰原子之间是通过苯环上的两个邻位羧基相连,距离较大。不胜感激!


[ Last edited by hxr8086 on 2010-9-7 at 15:08 ]
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sciencemaji

至尊木虫 (文坛精英)

hxr8086(金币+20): 2010-09-09 20:11:50
从你的实验曲线上还不能确定在低温下的铁磁性的存在,因为你的ZFC峰太不明显了,而且即便有低温铁磁性也很弱、发生的温度也很低,从你的数据上看,体系更像是具有顺磁性。
5楼2010-09-09 12:15:17
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sciencemaji

至尊木虫 (文坛精英)


帝夫(金币+1):感谢发帖交流! 2010-09-01 15:55:04
你加多大的磁场作出的FC/ZFC?怎么两者会没有明显的区别呢?
2楼2010-09-01 15:50:23
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hxr8086

木虫 (正式写手)

引用回帖:
Originally posted by sciencemaji at 2010-09-01 15:50:23:
你加多大的磁场作出的FC/ZFC?怎么两者会没有明显的区别呢?

我不懂磁性,我也不知道多大的磁场,但实验数据中有以下数据,是不是你所说的磁场强度

STARTUPAXIS,X,4,LINEAR,AUTO,0.000000,0.000000
STARTUPAXIS,Y1,5,LINEAR,AUTO,0.000000,0.000000


STARTUPGROUP,Longitudinal
FIELDGROUP,Longitudinal,1,2,3,4,5,6,7,8,9,10,11,19,20,21,22,23,35
FIELDGROUP,Transverse,1,2,3,4,12,13,14,15,16,17,18,24,25,26,27,28,35

PLOT_APPEARANCE,ALL,HORZ_GRID_ON,VERT_GRID_ON,MARKERS_AND_LINES

[Data]
Time,Comment,Field (Oe),Temperature (K),Long Moment (emu),Long Scan Std Dev,Long Offset (cm),Long Offset Std Dev,Long Algorithm,Long Reg Fit,Long Reg Factor,Trans Moment (emu),Trans Scan Std Dev,Trans Offset (cm),Trans Offset Std Dev,Trans Algorithm,Trans Reg Fit,Trans Reg Factor,Long Moment [w/o ABS] (emu),Long Scan Std Dev [w/o ABS],Long Offset [w/o ABS] (cm),Long Offset Std Dev [w/o ABS],Long Reg Fit [w/o ABS],Trans Moment [w/o ABS] (emu),Trans Scan Std Dev [w/o ABS],Trans Offset [w/o ABS] (cm),Trans Offset Std Dev [w/o ABS],Trans Reg Fit [w/o ABS],RSO Position (deg),Amplitude (cm),Frequency,Cycles to Average,Scans per Measurement,Delta Temp (K),Error,EC Comp. Running,Using ABS,
1272607571.843,,5.000000e+002,1.801990e+000,6.943895e-003,0.000000e+000,-8.251444e-004,0.000000e+000,3,9.902472e-001,1.825000e+000,,,,,,,,,,,,,,,,,,0,4.000000e+000,5.000000e-001,5,1,6.678939e-003,0,0,0,
1272607758.703,,5.000000e+002,2.000102e+000,6.985649e-003,0.000000e+000,-9.036516e-004,0.000000e+000,3,9.902318e-001,1.825000e+000,,,,,,,,,,,,,,,,,,0,4.000000e+000,5.000000e-001,5,1,4.866123e-003,0,1,0,
1272608009.546,,5.000000e+002,3.000786e+000,7.113241e-003,0.000000e+000,-8.690644e-004,0.000000e+000,3,9.902253e-001,1.825000e+000,,,,,,,,,,,,,,,,,,0,4.000000e+000,5.000000e-001,5,1,5.795002e-003,0,0,0,
1272608165.875,,5.000000e+002,4.023712e+000,7.021330e-003,0.000000e+000,-9.886432e-004,0.000000e+000,3,9.900275e-001,1.825000e+000,,,,,,,,,,,,,,,,,,0,4.000000e+000,5.000000e-001,5,1,2.030420e-002,0,0,0,
1272608308.203,,5.000000e+002,5.006356e+000,6.790793e-003,0.000000e+000,-1.030466e-003,0.000000e+000,3,9.901252e-001,1.825000e+000,,,,,,,,,,,,,,,,,,0,4.000000e+000,5.000000e-001,5,1,6.457806e-003,0,1,0,
3楼2010-09-01 19:04:12
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Inorg@USF

木虫 (正式写手)

同意楼上说的,不过从低温位置7K左右看,应该是有逆铁磁性的,你需要做一下非线性拟合,看看你的偶极距是多少,还有要结合你的结构特点,建议看看一下高松,Ferey的文章
There is a will,there is a way.
6楼2010-09-09 13:01:38
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