Magnetic order and heavy fermion behavior in CePd1+xAl6−x: Synthesis, structure, and physical properties

✍ Scribed by Paul H. Tobash; Filip Ronning; J.D. Thompson; Svilen Bobev; Eric D. Bauer

• Publisher: Elsevier Science
• Year: 2010
• Tongue: English
• Weight: 387 KB
• Volume: 183
• Category: Article
• ISSN: 0022-4596
• DOI: 10.1016/j.jssc.2009.12.010

✦ Synopsis

The physical properties including magnetic susceptibility, specific heat, and electrical resistivity of single crystals are reported for the compound CePd 1 + x Al 6 À x (x=0.5) which crystallizes in the tetragonal SrAu 2 Ga 5 -type structure (space group P4/mmm). The compound was grown from an excess of molten Al flux from the respective elements and the crystal structure was established from single-crystal X-ray diffraction. Anomalies in the low temperature specific heat C p (T) and electrical resistivity r(T) show that the compound undergoes ferromagnetic order at T C = 2.8 K. In the ordered state, CePd 1.5 Al 5.5 displays heavy fermion behavior with a Sommerfeld coefficient of ca. 500 mJ/mol-K 2 .