Dears,
I have the attached file which have SQUID output, the Long momentum is negative and I need to treat the data in way to have XT (emu.mol/K) which will be in a range of 0
Hi Murad. You have to correct the diamagnetic contribution (negative) of your sample holder (a plastic capsule usually) by measuring an empty sample holden in the same conditions and extrapolating the signal of the sample holder to the T of your experimental data. X is simply calculated as: ](Long. moment)*(Mol. weight)] / [(mass in g) * (H in Gauss)]. Finally you should correct the diamagnetic contribution (also negative) of the inner paired electrons using Pascal Constant Tables (see G.A. Bain, J.F. Berry, J. Chem. Educ. 85 (2008) 532). Good luck !!
May I ask you something else Carlos,
is this sample needs diamagnetic correction for the capsule
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[Header]
TITLE MPMS DC Measurement
BYAPP MPMS Measurement 2.1 Summary
FILEOPENTIME 1482188400.750000 12/19/2016 6:00:00 PM
INFO APPNAME MPMS MultiVu Application Revision 1.56 Build 72
INFO NAME CO2Na12…
INFO WEIGHT .0518 g
INFO AREA .125 inches
INFO LENGTH .079 inches
INFO SHAPE cylinder
INFO COMMENT
INFO SEQUENCE FILE: CmdList.seq
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Yes, you should correct the diamagnetic contribution of both, the sample holder and internal paired electrons since the emu signal of your sample is negative. Contact me by mail and I will explain you in detail. Regards. Carlos
Sir
I am new for magnetic measurements. can you explain me what is the meaning of Long. moment? how to extrapolate the data?
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