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Thread: Calculation of curie constant

  1. #1 Calculation of curie constant 
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    1)The curie temperature of iron is 1043 Kelvin. Assume that iron atoms, when in metallic form have moments of 2 Bohr magneton per atom. Iron is body centered cube with lattice parameter a = 0.286 nm. Calculate the curie constant.
    I solved it in the following way:
    Let m be the magnetic moment of an iron atom, N be the number of atoms per unit volume, K be the boltzmann constant, mu be the permeability of free space and C be the Curie constant.
    m = 2[m(B)] {where m(B) is Bohr magneton}
    = 18.54 x 10^(-24) A-m^2
    N = n/(a^3) {where n is number of atoms in 1 cubic lattice of iron}
    = 2/[(0.286 x 10^(-9))^3]
    = 8.5 x 10^28 atoms per unit volume
    C = [(m^2)(mu)N]/[3K]
    C = 0.89
    But the answer given in my book is 0.66.


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  3. #2 erm 
    Forum Professor leohopkins's Avatar
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    Jesus CHRIST! what the hell are you talking about ?


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  4. #3  
    Forum Isotope Zelos's Avatar
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    its mathematical calculations to calculate a constant. this isnt that hard.
    I am zelos. Destroyer of planets, exterminator of life, conquerer of worlds. I have come to rule this uiniverse. And there is nothing u pathetic biengs can do to stop me

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  5. #4  
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    Quote Originally Posted by Zelos
    its mathematical calculations to calculate a constant. this isnt that hard.
    I Agree.Now, would u mind telling whether it is right or not?
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  6. #5  
    Forum Isotope Zelos's Avatar
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    1 cubic lattice of iron
    sorry i cant help you since i am unfamiliar with the word lattice
    I am zelos. Destroyer of planets, exterminator of life, conquerer of worlds. I have come to rule this uiniverse. And there is nothing u pathetic biengs can do to stop me

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  7. #6 Re: erm 
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    Quote Originally Posted by leohopkins
    Jesus CHRIST! what the hell are you talking about ?
    If you are to lazy to look it up, it the temperature at which magnetic domains lose their alignment, or if you like heat up a magnet it loses it's magnetism, but when it cools down again it recovers it.
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