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Journal Article

Anisotropic Magnetic Behaviour in UPd2Al3

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Grauel, A., Böhm, A., Köhler, R., Modler, R., Geibel, C., Sato, N., et al. (1993). Anisotropic Magnetic Behaviour in UPd2Al3. International Journal of Modern Physics B, 7(1-3), 30-33. doi:10.1142/S0217979293000081.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0019-D773-D
The magnetic phase diagram of the antiferromagnetically ordered heavy-fermion superconductor UPd2Al3 (T(N)=14K, T(c)=2K) is highly anisotropic. Three different magnetic phases are only observed for magnetic fields applied in the easy basal plane of the hexagonal PrNi2Al3 structure (B perpendicular-to c). For B parallel-to c, only one transition at the Neel temperature T(N) is found. A tetravalent (5f2) uranium-configuration is inferred from a crystal-electric field analysis of the temperature dependence of the anisotropic paramagnetic susceptibility.