Magnetic Moment Calculation

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Rajupeta Nagaraju

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Sep 5, 2012, 2:04:36 PM9/5/12
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Dear All,

I am research scholar and I am working on transition metal (Mn) doped ZnO thin films for spintronics applications.

I need the information about converting saturation magnetization,Ms, (emu/g)  to  μB/ion . I am unable to find this information in journals and books.

Please kindly tell me the procedure to do the conversion, which will more useful to my work. 

With Regards,

Nagaraj

magesh kumar

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Sep 7, 2012, 6:29:19 AM9/7/12
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Hi Raju,

You can convert emu/g to μB/ion as follows:

The unit for Magnetization (M) is emu/g. The relation between Magnetization and Bohr magnetons is

M = n * μB * N * d/A (emu/g)

where,
n = number of unpaired electron spins/atom
μB = Bhor magneton
N = Avagadro's number (6.023*10^23)
d = density
A = atomic weight

So, the magnetization in μB/ion is

 μB = (M * A) / (n * N * d)  μB/ion

I hope that it would be helpful for you. All the best.....

Regards,
Mageshkumar


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Harsh Trivedi

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Sep 7, 2012, 3:51:17 AM9/7/12
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Please follow the below steps:

1. Calculate the total no. of ions in 1 gram (Use mole concept or any other suitable approach),m or get an idea as to how much Mn ion is present in 1gm of your film.

2. Than you will be able to calculate moment per ion in emu, (Divide ur saturation Ms emu/gm by the no. of ions per gram you obtained in previous step).

3. Now you get a value of moment per ion site in emu, to convert it to uB use the factor i.e. something uB = something emu (i dont remember but its like 9.97 *10^ -29emu for 1 uB , please refer a modern physics book, its given in Arthur Beieser)

4. Voila, you got your answer......normally uB values are like 1 to 10 for ferromagnet films (even 0.1 for bulk), and around 0.01 for antiferromagnets.

Sachin Gupta

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Sep 6, 2012, 12:25:54 PM9/6/12
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μB/ion=  {M(emu/g)*Mol. wt.* 1.7904}/10000
..................................................
With Regards:
Sachin Gupta

Senior Research Fellow
Department of Physics
Indian Institute of Technology,Bombay
Powai - 400076, India
Gmail: gsac...@gmail.com
email : sac...@phy.iitb.ac.in
           sachi...@iitb.ac.in



On Wed, Sep 5, 2012 at 11:34 PM, Rajupeta Nagaraju <rajupeta...@gmail.com> wrote:
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gaurav sharma

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Oct 10, 2012, 12:14:34 PM10/10/12
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hi all . i m in search of all  the possible transition level in hydrogenic fe ions atleast upto n=40 ,if any of you know something abt that plz let me know

Dhruvashi Tiloriya

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Aug 24, 2014, 2:28:53 AM8/24/14
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Hello,
I am also doing the same,I also have a problem in the conversion of magnetisation(emu/cm^3) to uB/ion.

what is the difference between emu/g (which is specific magnetization)
and emu/cm^3 (magnetization). I m confused.

see the link http://www.gitam.edu/eresource/Engg_Phys/semester_2/magnetic/def.htm


Jerald Cleetus

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Aug 25, 2014, 12:00:12 PM8/25/14
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Dear All, which device u r using now, MFM or AFM or any other. i think for MFM Agilent Tech has good device. contact me for more details..


On 25 August 2014 10:39, Jerald Cleetus <jerald...@gmail.com> wrote:
Dear All, i think ur problem is gona solved with Confocal Raman Microscopy of WITECH, Germany.

if u want to know about any scientific instruments pls do not hesitate to contact on jerald...@gmail.com


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Jerald Cleetus

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Mobile: +91 9946684953




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Jerald Cleetus

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Mobile: +91 9946684953

sunil mehra

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Aug 26, 2014, 11:02:49 AM8/26/14
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It is symple dear emu is the cgs unit of magnetic moment .
magnetisation=magnetic moment per unit volume and specific
magnetisation = magnetic moment per unit mass.
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