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000010529 084__ $$2WoS$$aPhysics, Condensed Matter
000010529 1001_ $$0P:(DE-Juel1)VDB34442$$aChatterji, T.$$b0$$uFZJ
000010529 245__ $$aMagnetoelastic effect in MF2 (M = Mn, Fe, Ni) investigated by neutron powder diffraction
000010529 260__ $$aBristol$$bIOP Publ.$$c2010
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000010529 440_0 $$03703$$aJournal of Physics: Condensed Matter$$v22$$x0953-8984$$y31
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000010529 520__ $$aWe have investigated the magnetoelastic effects in MF(2) (M = Mn, Fe, Ni) associated with the antiferromagnetic phase transition temperature T(N) by neutron powder diffraction. The temperature variation of the lattice parameters and the unit cell volume has been determined accurately with small temperature steps. From the temperature variation of the lattice parameters a, c and V the lattice strains Δa, Δc and ΔV associated with the antiferromagnetic phase transition have been extracted. Rietveld refinement of the crystal and magnetic structures from the diffraction data at low temperature gave a magnetic moment of 5.12 ± 0.09 μ(B), 4.05 ± 0.05 μ(B) and 1.99 ± 0.05 μ(B) per Mn, Fe and Ni ions, respectively. The lattice strains Δa, Δc and ΔV couple linearly with the intensity of the 100 magnetic reflection, which is proportional to square of the order parameter of the antiferromagnetic phase transition. The volume strains in MF(2) (M = Mn, Fe, Co, Ni) due to the magnetostriction vary smoothly along the transition metal series and seem to be correlated with the strength of the exchange interaction and the moments of the magnetic ions.
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000010529 7001_ $$0P:(DE-HGF)0$$aIles, G.N.$$b1
000010529 7001_ $$0P:(DE-HGF)0$$aOuladdiaf, B.$$b2
000010529 7001_ $$0P:(DE-HGF)0$$aHansen, T.C.$$b3
000010529 773__ $$0PERI:(DE-600)1472968-4$$a10.1088/0953-8984/22/31/316001$$gVol. 22, p. 316001$$p316001$$q22<316001$$tJournal of physics / Condensed matter$$v22$$x0953-8984$$y2010
000010529 8567_ $$uhttp://dx.doi.org/10.1088/0953-8984/22/31/316001
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000010529 9141_ $$y2010
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