Elastic and magnetostrictive properties of Tb6Fe1-xCioBi2 (0 < x < 0.375)

Journal Article · Sat Jan 01 00:00:00 EST 2011 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.3549613· OSTI ID:1014240

Koehler, Michael R. ^[1]; Jia, Lin ^[2]; McCarthy, David ^[1]; McGuire, Michael A ^[2]; Keppens, Veerle ^[1]

---

1. University of Tennessee, Knoxville (UTK)
2. ORNL

Elastic moduli and magnetostriction data are reported for polycrystalline Tb{sub 6}Fe{sub 1-x}Co{sub x}Bi{sub 2} (0 {le} x {le} 0.375). The elastic moduli c{sub 11} and c{sub 44} 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 Tb{sub 6}Fe{sub 0.75}Co{sub 0.25}Bi{sub 2}.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE Office of Science (SC)
• DOE Contract Number: DE-AC05-00OR22725
• OSTI ID: 1014240
• Journal Information: Journal of Applied Physics, Vol. 109, Issue 7; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
MAGNETIC FIELDS
MAGNETOSTRICTION
PHYSICS