Study of Crystal-Electric Field (CEF) effects on Magnetism of Ce2NiGe3 using Inelastic Neutron Scattering
The Kondo lattice compound, Ce2NiGe3 exhibits spin-glass like behavior at low temperatures due to magnetic frustration and disorder arising due to random intermixing at Ni and Ge sites. The specific heat studies show CEF excitation energies of Δ1 = 135 K and Δ2 =498 K from ground state. Keeping in mind the importance of CEF levels in understanding the physical properties of cerium intermetallics exhibiting Kondo behavior, we propose to carry out inelastic neutron scattering (INS) experiments to obtain energy spectra on IN4 at three different temperatures 2, 10 and 50 K (spanning the region of interest, as observed from magnetic susceptibility data) on Ce2NiGe3 as well as its non-magnetic counterpart, La2NiGe3. The study of both magnetic (Ce2NiGe3) and non-magnetic counterparts (La2NiGe3) will help in determining the variation of the quasi-elastic spectrum, magnetic excitation spectrum (CEF energies) as well as the phonon density of states as a function of temperature.
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SIRUGURI Vasudeva; PETER Sebastian; RAO MALA; RAYAPROL SUDHINDRA and ROLS Stephane. (2013). Study of Crystal-Electric Field (CEF) effects on Magnetism of Ce2NiGe3 using Inelastic Neutron Scattering. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.4-01-1316
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