Magnetic structure of divalent europium compound EuGa
studied by single-crystal time-of-flight neutron diffraction
Kawasaki, Takuro
; Kaneko, Koji
; Nakamura, Ai*; Aso, Naofumi*; Hedo, Masato*; Nakama, Takao*; Ohara, Takashi
; Kiyanagi, Ryoji
; Oikawa, Kenichi
; Tamura, Itaru
; Nakao, Akiko*; Munakata, Koji*; Hanashima, Takayasu*; Onuki, Yoshichika*
The magnetic structure of the intermetallic compound EuGa
was investigated using single-crystal neutron diffraction with TOF Laue technique on the new diffractometer SENJU at MLF of J-PARC. Despite of the high neutron absorption of Eu, a vast number of diffraction spots were observed without isotope enrichment. The magnetic reflections appeared at
2
below 16 K, indicating that the ordering vector is
= (0, 0, 0). The continuous evolution of the magnetic reflection intensity below T
follows a squared Brillouin function for
= 7/2. By adopting a wavelength-dependent absorption collection, the magnetic structure of EuGa
revealed that a nearly full magnetic moment of 6.4
B of Eu lies within the basal plane of the lattice.