Structural disorder in a magnetic pyrochlore oxide
نویسندگان
چکیده
منابع مشابه
Structural disorder and properties of the stuffed pyrochlore Ho2TiO5
G. C. Lau,1,* R. S. Freitas,2,† B. G. Ueland,2 M. L. Dahlberg,2 Q. Huang,3 H. W. Zandbergen,4 P. Schiffer,2 and R. J. Cava1 1Department of Chemistry, Princeton University, Princeton, New Jersey 08544, USA 2Department of Physics and Materials Research Institute, Pennsylvania State University, University Park, Pennsylvania 16802, USA 3NIST Center for Neutron Research, NIST, Gaithersburg, Maryland...
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Within the past 20 years or so, there has occurred an explosion of interest in the magnetic behavior of pyrochlore oxides of the type A 2 B 4+ 2 O7 where A is a rare-earth ion and B is usually a transition metal. Both the A and B sites form a network of corner-sharing tetrahedra which is the quintessential framework for a geometrically frustrated magnet. In these systems the natural tendency to...
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The magnetic behavior of polycrystalline samples of Er(2)Ir(2)O(7) and Tb(2)Ir(2)O(7) pyrochlores is studied by magnetization measurements and neutron diffraction. Both compounds undergo a magnetic transition at 140 and 130 K, respectively, associated with an ordering of the Ir sublattice, signaled by thermomagnetic hysteresis. In Tb(2)Ir(2)O(7), we show that the Ir molecular field leads the Tb...
متن کاملRods of neutron scattering intensity in Yb2Ti2O7: compelling evidence for significant anisotropic exchange in a magnetic pyrochlore oxide.
Paramagnetic correlations in the magnetic material Yb(2)Ti(2)O(7) have been investigated via neutron scattering, revealing a [111] rod of scattering intensity. Assuming interactions between the Yb(3+) ions composed of all symmetry-allowed nearest neighbor exchange interactions and long-range dipolar interactions, we construct a model Hamiltonian that allows for an excellent description of the n...
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ژورنال
عنوان ژورنال: Acta Crystallographica Section A Foundations and Advances
سال: 2016
ISSN: 2053-2733
DOI: 10.1107/s2053273316095401