Elastic and magnetostrictive properties of Tb6Fe1−xCoxBi2 (0 ≤ x ≤ 0.375)
Abstract
Elastic moduli and magnetostriction data are reported for polycrystalline Tb6Fe1−xCoxBi2 (0 ≤ x ≤ 0.375). The elastic moduli c11 and c44 have been measured as a function of temperature (5–300 K) and magnetic field (0–5 T), and reflect the ferromagnetic transition observed in these materials around 250 K. A remarkable elastic softening, which is partially suppressed upon application of a magnetic field, is observed at low temperatures and is believed to be linked to a structural transition that takes place in the Co-doped samples. The soft elastic moduli lead to large magnetostriction below 50 K, reaching a value of 700 ppm at 20 kOe for Tb6Fe0.75Co0.25Bi2.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Mar 29, 2011
- Source ID
- 10.1063/1.3549613
Entities
People
- David Mccarthy
- Lin Jia
- Michael A McGuire
- Michael R. Koehler
- Veerle Keppens
Organizations
- Oak Ridge National Laboratory
- Office of Naval Research
- University of Tennessee