2019-05-14 06:59:39 +08:00
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# fcc nickel in a 3d periodic box
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clear
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units metal
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atom_style spin
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dimension 3
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boundary p p p
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# necessary for the serial algorithm (sametag)
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atom_modify map array
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lattice fcc 3.524
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region box block 0.0 5.0 0.0 5.0 0.0 5.0
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create_box 1 box
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create_atoms 1 box
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# setting mass, mag. moments, and interactions for cobalt
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mass 1 58.69
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set group all spin/random 31 0.63
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#set group all spin 0.63 0.0 0.0 1.0
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velocity all create 100 4928459 rot yes dist gaussian
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pair_style hybrid/overlay eam/alloy spin/exchange 4.0
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pair_coeff * * eam/alloy Ni99.eam.alloy Ni
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pair_coeff * * spin/exchange exchange 4.0 0.50 0.2280246862 1.229983475
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neighbor 0.1 bin
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neigh_modify every 10 check yes delay 20
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fix 1 all precession/spin cubic -0.0001 0.0 1.0 0.0 0.0 0.0 1.0 0.0 0.0 0.0 1.0 &
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zeeman 0.0 0.0 0.0 1.0
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fix_modify 1 energy yes
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fix 2 all langevin/spin 0.0 0.0 21
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2019-09-25 05:58:22 +08:00
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fix 3 all nve/spin lattice moving
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2019-05-14 06:59:39 +08:00
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timestep 0.0001
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# compute and output options
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compute out_mag all spin
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compute out_pe all pe
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compute out_ke all ke
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compute out_temp all temp
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variable magz equal c_out_mag[3]
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variable magnorm equal c_out_mag[4]
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variable emag equal c_out_mag[5]
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variable tmag equal c_out_mag[6]
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thermo_style custom step time v_magnorm v_emag temp v_tmag etotal
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thermo 50
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compute outsp all property/atom spx spy spz sp fmx fmy fmz
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dump 50 all custom 1 dump.lammpstrj type x y z c_outsp[1] c_outsp[2] c_outsp[3] c_outsp[4] c_outsp[5] c_outsp[6] c_outsp[7]
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run 2000
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