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The magnetic state of the low dimensional CuTe2O5 compound below 20 K

We report low field studies of the static magnetic susceptibility and torque measurements in the temperature range 2-330 K for the powder and crystalline CuTe2O5 compound. We show that the observed extraordinarily large magnetic axis rotation below 20 K and small (nearly negligible), but highly anisotropic, low temperature susceptibility upturn (which is thus of intrinsic nature) is a consequence of the changes within the ground state d9 orbital doublet which take place below 20 K, smoothly.

Saturation moments and magnetic susceptibilities; Magnetic anisotropy; Quantized spin models; Spin arrangements in magnetically ordered materials

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