TY - JOUR
T1 - High magnetic field properties in Ru2-xFexCrSi with antiferromagnetic and spin-glass states
AU - Hiroi, Masahiko
AU - Nishiinoue, Sora
AU - Shigeta, Iduru
AU - Ito, Masakazu
AU - Koyama, Keiichi
AU - Kondo, Akihiro
AU - Kindo, Koichi
AU - Watanabe, Isao
AU - Fujii, Muneaki
AU - Kimura, Shojiro
AU - Manaka, Hirotaka
AU - Terada, Norio
N1 - Funding Information:
Part of this work was carried out by the joint research in the Institute for Solid State Physics, the University of Tokyo (ISSP), and we are grateful to T. Yamauchi at the Materials Design and Characterization Laboratory, ISSP for advice and help. Part of this work was performed at High Field Laboratory for Superconducting Materials, Institute for Materials Research, Tohoku University (Projects No. 18H0017 and No. 19H0025). Parts of the measurements were performed using the PPMS of Institute of Pulsed Power Science, Kumamoto University. M.H. acknowledges support from JSPS KAKENHI Grant No. 17K06774.
Publisher Copyright:
© 2021 American Physical Society.
PY - 2021/3/19
Y1 - 2021/3/19
N2 - We report experimental studies on Ru2-xFexCrSi focusing on properties related to antiferromagnetism in Ru2CrSi and spin glass (SG) in Ru1.9Fe0.1CrSi. By measuring the temperature dependence of magnetization M(T), specific heat C(T), electrical resistivity ρ(T), and muon spin relaxation (μSR), we observed that Ru2CrSi exhibited an antiferromagnetic (AF) transition at a temperature TN of ∼13 K, and Ru1.9Fe0.1CrSi showed SG properties that could be interpreted as successive SG transitions, where the spin-freezing occurred at temperature Tg, and below that strong irreversibility in M(T) and a gradual peak of M(T) at T∗(>Tg) appeared. When the data for 0≤x≤0.1 were compared, by substituting Fe the AF order was rapidly destroyed and it appeared to change to two anomalies at T∗ and Tg. With increasing x, there was a slight change in Tg from TN for x=0; however, T∗ increased, suggesting that the AF and the SG states are closely related. Furthermore, the results of specific heat, resistivity, and magnetization in high fields were presented and compared. For Ru2CrSi in specific heat under high magnetic fields up to 14 T, the peak shape around TN and the TN value were constant. The resistivity and magnetization in pulsed fields suggested that TN of Ru2CrSi was constant up to over 50 T. These results demonstrated the unusual robustness of the AF transition to magnetic fields. In Ru1.9Fe0.1CrSi, unusual hysteresis in magnetoresistance was observed in static and pulsed magnetic fields, although their appearances differed. These hystereses were considered a manifestation of the curious properties of the SG state with strong irreversibility.
AB - We report experimental studies on Ru2-xFexCrSi focusing on properties related to antiferromagnetism in Ru2CrSi and spin glass (SG) in Ru1.9Fe0.1CrSi. By measuring the temperature dependence of magnetization M(T), specific heat C(T), electrical resistivity ρ(T), and muon spin relaxation (μSR), we observed that Ru2CrSi exhibited an antiferromagnetic (AF) transition at a temperature TN of ∼13 K, and Ru1.9Fe0.1CrSi showed SG properties that could be interpreted as successive SG transitions, where the spin-freezing occurred at temperature Tg, and below that strong irreversibility in M(T) and a gradual peak of M(T) at T∗(>Tg) appeared. When the data for 0≤x≤0.1 were compared, by substituting Fe the AF order was rapidly destroyed and it appeared to change to two anomalies at T∗ and Tg. With increasing x, there was a slight change in Tg from TN for x=0; however, T∗ increased, suggesting that the AF and the SG states are closely related. Furthermore, the results of specific heat, resistivity, and magnetization in high fields were presented and compared. For Ru2CrSi in specific heat under high magnetic fields up to 14 T, the peak shape around TN and the TN value were constant. The resistivity and magnetization in pulsed fields suggested that TN of Ru2CrSi was constant up to over 50 T. These results demonstrated the unusual robustness of the AF transition to magnetic fields. In Ru1.9Fe0.1CrSi, unusual hysteresis in magnetoresistance was observed in static and pulsed magnetic fields, although their appearances differed. These hystereses were considered a manifestation of the curious properties of the SG state with strong irreversibility.
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U2 - 10.1103/PhysRevB.103.094428
DO - 10.1103/PhysRevB.103.094428
M3 - Article
AN - SCOPUS:85103790411
SN - 2469-9950
VL - 103
JO - Physical Review B
JF - Physical Review B
IS - 9
M1 - 094428
ER -