Large magnetic Bragg peak enhancement by ultrasound injection on FeTiO3
Abstract
FeTiO3 is an ilmenite antiferromagnetic insulator containing Fe2+, with two-dimensional ferromagnetic honeycomb layers antiferromagnetically stacked along the c-axis. The magnetic Bragg peak intensity is found to be enhanced under the application of ultrasound up to 300% in FeTiO3 crystals at low temperatures. The pronounced enhancement is attributed to strong spin–lattice coupling of Fe2+ in FeTiO3. This effect disappears above 35 K, suggesting that the energy splitting of Fe2+ levels induced by spin–orbit coupling is about 35 K. This finding suggests a promising pathway toward high efficiency acoustic spin pumping.
Article Details
Journal Info
Applied Physics Letters
American Institute of Physics
Authors (11)
Shin-ichi Shamoto
Kwangwoo Shin
Mitsuhiro Akatsu
Department of Physics, Niigata University 6 , Niigata 950-2181,
Masaki Imai
Daichi Ueta
Tetsuya R. Yokoo
Yuichi Nemoto
Graduate School of Science and Technology, Niigata University 11 , Niigata 950-2181,
Amer M. A. Hassan
Reactor Physics Department, Nuclear Research Center, Egyptian Atomic Energy Authority (EAEA) 12 , Nasr, Cairo 11787,
Lieh-Jeng Chang
Department of Physics, National Cheng Kung University (NCKU) 3 , Tainan 70101,
Jun'ichi Ieda
Advanced Science Research Center, Japan Atomic Energy Agency , Tokai 319-1195,
Jae-Ho Chung