Magnetoelastic anomalies in CeNiSn

• Published in: Physica. B, Condensed matter Vol. 230; pp. 658 - 660
• Main Authors: Holtmeier, S., Hinkel, C., Aigner, M., Bruls, G., Finsterbusch, D., Wolf, B., Assmus, W., Lüthi, B.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01-02-1997
• Subjects: CeNiSn; Heavy-fermion magnetism; Metamagnetism; Ultrasound attenuation; CeNiSn; Metamagnetism; Heavy-fermion magnetism; Ultrasound attenuation
• ISSN: 0921-4526; 1873-2135
• DOI: 10.1016/S0921-4526(97)81592-X

In this report, we present ultrasonic data of a CeNiSn single crystal with metallic low-temperature resistivity. The thermal variations of the elastic constants at high temperatures can be described by a two-band model using the deformation potential coupling approach. At very low temperatures, we observe a minimum in the field dependence of
c
11 and
c
33 accompanied by a maximum in the ultrasonic absorption. This may be a hint for a metamagnetic-like transition which is a frequent phenomenon in magnetically non-ordered heavy-fermion compounds.