The magnetic phases of NdCu2

M. Loewenhaupt, T. Reif, P. Svoboda, S. Wagner, M. Waffenschmidt, H. von Löhneysen, E. Gratz, M. Rotter, B. Lebech, T. Hauss

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    The magnetic phase diagram of a NdCu2 single crystal is investigated by means of specific-heat measurements and neutron diffraction as a function of temperature and external magnetic field applied along the crystallographic b-direction. In the low temperature region we observe three commensurate phases AF1, F1, and F2. Their magnetic structures all consist of ferromagnetic (bc)-planes with different stacking sequences along the a-direction comprising 5, 3 and 8 chemical unit cells, respectively. Above 2.8 T the system is in a ferromagnetically aligned state (F3). Furthermore, there is an incommensurate phase AF3 between the low temperature commensurate phases and the paramagnetic state and, in a very narrow temperature region of only 0.2 K, an intermediate phase AF2 between AF1 and AF3. The Nd-moments are oriented along the b-direction in all phases.
    Original languageEnglish
    JournalZeitschrift fur Physik B-Condensed Matter
    Issue number4
    Pages (from-to)499-510
    Publication statusPublished - 1996


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