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Journal Articles

Synthesis, crystal structure and magnetic properties of Yb$$_{8}$$Ag$$_{18.5}$$Al$$_{47.5}$$, Yb$$_{2}$$Pd$$_{2}$$Cd and Yb$$_{1.35}$$Pd$$_2$$Cd$$_{0.65}$$

Dhar, S.*; Settai, Rikio*; Onuki, Yoshichika; Galatanu, A.*; Haga, Yoshinori; Manfrinetti, P.*; Pani, M.*

Journal of Magnetism and Magnetic Materials, 308(1), p.143 - 152, 2007/01

 Times Cited Count:14 Percentile:55.22(Materials Science, Multidisciplinary)

We report the synthesis of three new Yb-based compounds, Yb$$_8$$Ag$$_{18.5}$$Al$$_{47.5}$$, Yb$$_2$$Pd$$_2$$Cd and Yb$$_{1.35}$$Pd$$_2$$Cd$$_{0.65}$$. The crystal symmetry of these compounds has been determined and the complete structural characterisation carried out by single crystal and powder diffraction techniques. The 4f levels of the Yb ions are appreciably hybridised in Yb$$_8$$Ag$$_{18.5}$$Al$$_{47.5}$$ and to a lesser extent in Yb$$_2$$Pd$$_2$$Cd as inferred from the magnetisation and heat capacity data. Signatures of heavy fermion behaviour are observed in the heat capacity data of Yb$$_2$$Pd$$_2$$Cd in which the heat capacity, $$C/T$$, increases at low temperatures attaining a value of 600 mJ/molK$$^2$$ at 1.8 K. The electrical resistivity of Yb$$_2$$Pd$$_2$$Cd follows a linear variation with temperature, $$T$$, between 1.4 and 5K, thus indicating a possible non-Fermi liquid behaviour. In contrast, Yb ions are trivalent in Yb$$_{1.35}$$Pd$$_2$$Cd$$_{0.65}$$ and order magnetically near 1.4 K.

Journal Articles

Photoemission study of Yb$$_{2}$$Co$$_{3}$$X$$_{9}$$(X=Ga, Al); Variation of the electronic structure from a mixed-valent to Kondo-lattice systems

Okane, Tetsuo; Fujimori, Shinichi; Ino, Akihiro; Fujimori, Atsushi; Dhar, S. K.*; Mitra, C.*; Manfrinetti, P.*; Palenzona, A.*; Sakai, O.*

Physical Review B, 65(12), p.125102_1 - 125102_7, 2002/03

 Times Cited Count:13 Percentile:56.38(Materials Science, Multidisciplinary)

no abstracts in English

Journal Articles

High-resolution photoemission spectroscopy of Yb$$_{2}$$Co$$_{3}$$X$$_{9}$$(X=Ga and Al)

Okane, Tetsuo; Fujimori, Shinichi; Ino, Akihiro*; Fujimori, Atsushi*; Dhar, S. K.*; Mitra, C.*; Manfrinetti, P.*; Palenzona, A.*

Physica B; Condensed Matter, 312-313, p.349 - 351, 2002/00

 Times Cited Count:0 Percentile:0(Physics, Condensed Matter)

no abstracts in English

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