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Magnetic correlations in the paramagnetic phases of MnAs
journal contribution
posted on 2006-05-11, 14:22 authored by Klaus-Ulrich Neumann, K.R.A. Ziebeck, F. Jewiss, L. Daweritz, K.H. Ploog, A. MuraniThe magnetic scattering in the paramagnetic phases of MnAs has been investigated in a spin polarised neutron
scattering experiment. The magnetic correlations are found to indicate ferromagnetic short-range order which persists
in both the orthorhombic as well as the high temperature hexagonal modification of MnAs. In particular, the unusual
magnetic properties of the orthorhombic phase, as revealed by magnetisation measurements, are not mirrored in the
magnetic scattering results which have been obtained in an almost zero external field experiment. The magnitude and
the scattering vector dependence of the magnetic moment do not change as a function of temperature. It is argued that
the unusual temperature dependence of the magnetic susceptibility is a phenomenon induced by the application of an
external magnetic field and arises due to a coupling of magnetic and lattice degrees of freedom.
History
School
- Science
Department
- Physics
Pages
89791 bytesCitation
NEUMANN et al, 2003. Magnetic correlations in the paramagnetic phases of MnAs. Physica B, 335 (1-2), pp. 34-36Publisher
© ElsevierPublication date
2003Notes
This article was published in the journal, Physica B [© Elsevier]. It is also available: http://www.sciencedirect.com/science/journal/09214526.ISSN
0921-4526Language
- en