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Bulk and Local Magnetic Susceptibility of ErB_{12}

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Bogach A., Bogomolov L., Glushkov V., Demishev S., Sluchanko D., Sluchanko N., Shitsevalova N., Levchenko A., Filipov V., Flachbart K., Siemensmeyer K.

Acta Physica Polonica A

2008

vol. 113

issue 1

271-274

High precision measurements of magnetoresistance Δρ/ρ = f(T,H) and magnetization M(T,H) were carried out on single crystals of rare-earth dodecaboride ErB_{12} at temperatures in the interval 1.8-30 K in magnetic fields up to 70 kOe. The high accuracy of the experiments allowed us to perform numerical differentiation and analyze quantitatively the behavior of the derivative d(Δρ/ρ)/dH = f(T,H) and of the magnetic susceptibility χ(T,H) = dM/dH in paramagnetic and magnetically ordered (antiferromagnetic, T_N ≈ 6.7 K and T_M ≈ 5.85 K) phases of ErB_{12}. It was shown that negative magnetoresistance anomalies observed in present study in paramagnetic state of ErB_{12} may be consistently interpreted in the framework of a simple relation between resistivity and magnetization -Δρ/ρ ~ M^2.

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1 Acta Physica Polonica A

1 2008

1 Bogach A.

1 Bogomolov L.

1 Demishev S.

1 Filipov V.

1 Flachbart K.

1 Glushkov V.

1 Levchenko A.

1 Shitsevalova N.

1 Siemensmeyer K.

1 Sluchanko D.

1 Sluchanko N.

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Bulk and Local Magnetic Susceptibility of ErB_{12}