Magnetic field inducing co-existing antiferromagnetic phases in SrYb2O4
SrYb2O4 is an insulating magnet, consisting of two types of zigzag chains running along the c-axis and forming a honeycomb structure in the ab-plane. The similar first and second-neighbor distances suggest high geometrically frustrated magnetic interactions. This frustration sums up to strong single ion anisotropy to produce a highly degenerate ground state manifold reflected by a very complex and anisotropic magnetic phase diagram. Despite of SrYb2O4 having a CurieWeiss temperature of −110K, the compound only orders at 0.9K at zero field, the magnetic structure is found to be noncollinear with a reduction of the ordered magnetic moment from the full ionic moment. Due the competition between frustration and high single ion anisotropy, SrYb2O4 has very rich and complex magnetic phase diagram. New magnetic Bragg peaks appear at 5T, when the field is applied along the c axis, suggesting a formation of a new magnetic structure. Here we propose to study these different phases using single crystal neutron diffraction on D10.
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QUINTERO CASTRO Diana Lucia; ISLAM A T M Nazmul; Bella Lake; OULADDIAF Bachir and REEHUIS Manfred. (2015). Magnetic field inducing co-existing antiferromagnetic phases in SrYb2O4. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.5-41-806
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