Influence of the crystalline electric field on the magnetic properties of Ga-doped NdBa{sub 2}Cu{sub 3}O{sub {ital x}} (abstract)
- Laboratory for Neutron Scattering, ETH Zurich
- Max-Planck-Institut fuer Festkoerperforschung, 70569 Stuttgart (Germany)
Crystal electric field (CEF) effects are of essential importance for the magnetic properties of rare-earth ions. For NdBa{sub 2}Cu{sub 3}O{sub {ital x}} the variation of the CEF due to a reduction of oxygen directly influences the character of the magnetic ordering and partially explains the peculiar magnetic behavior of this system: Oxygen reduction transforms the 2D-Ising system just below {ital x}=6.9 into a (short-range) 2D-Heisenberg system due to a reduction of the single-ion anisotropy. Since, magnetic specific heat data for Ga-doped NdBa{sub 2}Cu{sub 3}O{sub {ital x}} resemble very much the oxygen reduced data, neutron CEF spectroscopy of Nd{sup 3+} in NdBa{sub 2}(Cu{sub 3{minus}{ital y}}Ga{sub {ital y}})O{sub {ital x}} was performed to deduce the behavior of the single-ion anisotropy. These neutron data in conjunction with paramagnetic susceptibility and specific heat data confirm the strong influence of the CEF on the magnetic ordering of the Nd ions. {copyright} {ital 1996 American Institute of Physics.}
- OSTI ID:
- 282079
- Report Number(s):
- CONF-951101--
- Journal Information:
- Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 8 Vol. 79; ISSN JAPIAU; ISSN 0021-8979
- Country of Publication:
- United States
- Language:
- English
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