TY - JOUR
T1 - Magnetic structure of divalent europium compound EuGa4 studied by single-crystal time-of-flight neutron diffraction
AU - Kawasaki, Takuro
AU - Kaneko, Koji
AU - Nakamura, Ai
AU - Aso, Naofumi
AU - Hedo, Masato
AU - Nakama, Takao
AU - Ohhara, Takashi
AU - Kiyanagi, Ryoji
AU - Oikawa, Kenichi
AU - Tamura, Itaru
AU - Nakao, Akiko
AU - Munakata, Koji
AU - Hanashima, Takayasu
AU - Onuki, Yoshichika
N1 - Funding Information:
We would like to thank M. Yogi, S. Shimomura, and Y. Homma for valuable discussions. This work was partly supported by Grants-in-Aid for Scientific Research (C) (Nos. 24540336 and 26400348) from the Japan Society for the Promotion of Science. The measurement was performed using SENJU along with the project use program (2012P0203) and the general use program (2014A0080) of J-PARC and CROSS.
Publisher Copyright:
©2016 The Physical Society of Japan.
PY - 2016/11/15
Y1 - 2016/11/15
N2 - The magnetic structure of the intermetallic compound EuGa4 was investigated using single-crystal neutron diffraction with the time-of-flight (TOF) Laue technique on the new diffractometer SENJU at the Materials and Life Science Experimental Facility (MLF) of the Japan Proton Accelerator Research Complex (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 positions with diffraction indices of h + k + l ≠ 2n below 16 K, indicating that the ordering vector is q = (0, 0, 0). The continuous evolution of the magnetic reflection intensity below TN follows a squared Brillouin function for S = 7/2. By adopting a wavelength-dependent absorption collection, the magnetic structure of EuGa4 was revealed that a nearly full magnetic moment of 6.4 μB of Eu lies within the basal plane of the lattice. In this study, we reveal a well-localized divalent Eu magnetism in EuGa4 and demonstrate a high ability of SENJU to investigate materials with high neutron absorption.
AB - The magnetic structure of the intermetallic compound EuGa4 was investigated using single-crystal neutron diffraction with the time-of-flight (TOF) Laue technique on the new diffractometer SENJU at the Materials and Life Science Experimental Facility (MLF) of the Japan Proton Accelerator Research Complex (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 positions with diffraction indices of h + k + l ≠ 2n below 16 K, indicating that the ordering vector is q = (0, 0, 0). The continuous evolution of the magnetic reflection intensity below TN follows a squared Brillouin function for S = 7/2. By adopting a wavelength-dependent absorption collection, the magnetic structure of EuGa4 was revealed that a nearly full magnetic moment of 6.4 μB of Eu lies within the basal plane of the lattice. In this study, we reveal a well-localized divalent Eu magnetism in EuGa4 and demonstrate a high ability of SENJU to investigate materials with high neutron absorption.
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U2 - 10.7566/JPSJ.85.114711
DO - 10.7566/JPSJ.85.114711
M3 - Article
AN - SCOPUS:84994779173
VL - 85
JO - Journal of the Physical Society of Japan
JF - Journal of the Physical Society of Japan
SN - 0031-9015
IS - 11
M1 - 114711
ER -