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Crystal symmetry and electronic properties of heavy-fermion MPd2Al3 (M = Ce, U)

✍ Scribed by S.A.M. Mentink; G.J. Nieuwenhuys; A.A. Menovsky; J.A. Mydosh; A. Drost; E. Frikkee; Y. Bando; T. Takabatake; P. Böni; P. Fischer; A. Furrer; A. Amato; A. Schenck

Publisher
Elsevier Science
Year
1994
Tongue
English
Weight
164 KB
Volume
199-200
Category
Article
ISSN
0921-4526

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✦ Synopsis

We have determined the Kondo temperature and cryslal-field splitting of the new hzavy-fermion compound CePd2AIby thermopower and inelastic neutron scattering. The absence of static, magnetically ordering cerium moments in single crystals is demonstrated by zero-field ta ~ SR. Small deviations of aluminum stoichiomelry yield significant variations of Ty of CePdzAI 3 and 7", of UPd2AI~ in different sampl,'s.

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Nine novel title compounds are prepared by arc-melting and characterized by XRD, resistivity, susceptibility, thermoelectric power, and specific heat measurements. All compounds crystallize in the orthorhombic space group Cmcm with Z = 4 (Y2Co3Ga9 type structure). The Ce compounds show a rather unco