Structure and magnetism in the frustrated cobalt compound (Y,Ni)BaCo4O7+d
The objective of this project is to study the structural and magnetic diffraction of (Y,Ni)BaCo4O7+delta cobaltites and relate them to our on-going research of their magnetic and transport properties. In particular, we wish to study the crystallographic details of the structural transition reported to occur in Ni-doped samples at lower temperatures than in non-doped samples. By varying the oxygen content, we will also study the different oxygen arrangements. The development of long-range and short-range magnetic order is an issue of fundamental interest in the current literature. Given that Ni-doping introduces a disproportion of of the Co2+ / Co3+ ions and also does the oxygen content, we wish to correlate possible magnetic order with the Co2+ / Co3+ relation. We estimate that 2 days at the high-resolution D2B diffractometer and 2 days at D20 for following online the structural and magnetic phase transitions, are necessary to pursue our objectives.
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CUELLO Gabriel; AURELIO Gabriela; BARDELLI Fabrizio and CANTARGI Florencia. (2013). Structure and magnetism in the frustrated cobalt compound (Y,Ni)BaCo4O7+d. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.5-24-530
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