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Magnetization steps in Zn_(1-x)Mn_xO: Four largest exchange constants and single-ion anisotropy
X. Gratens, V. Bindilatti, N. F. Oliveira +4
Magnetization steps (MST's) from Mn pairs in several single crystals of Zn_(1-x)Mn_xO (0.0056<=x<=0.030, and in one powder (x=0.029), were observed. The largest two exchange consta…
Magnetization steps in a diluted Heisenberg antiferromagnetic chain: Theory and experiments on TMMC:Cd
A. Paduan-Filho, N. F. Oliveira, V. Bindilatti +2
A theory for the equilibrium low-temperature magnetization M of a diluted Heisenberg antiferromagnetic chain is presented. The magnetization curve, M versus B, is calculated using…
Eu-Eu exchange interaction and Eu distribution in Pb_(1-x)Eu_(x)Te from magnetization steps
Ewout ter Haar, Valdir Bindilatti, Nei F. Oliveira +6
The magnetization of Pb_{1-x}Eu_{x}Te samples with x = 1.9, 2.6 and 6.0% was measured at 20 mK in fields up to 50 kOe, and at 0.6 K in fields up to 180 kOe. The 20 mK data show the…