High Magnetic Field Study of Elastic Constants of the Cage-structure Compound SmBe<sub>13</sub>

Mombetsu, Shota; Murazumi, T; Hiura, Koichiro; Yamazaki, S.; Shimizu, Yusei; Hidaka, Hisao; Yanagisawa, Tatsuya; Arima, Hiroshi; Yasin, S.; Жерлицын, С.; Wosnitza, J.

doi:10.1088/1742-6596/683/1/012032

Cited by 6 publications

(12 citation statements)

References 20 publications

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“…This is consistent with the sug- gested CEF ground state from the previous ultrasonic measurements. 22) Note that the actual 4 f -electron entropy at T M must be even closer to Rln4 than ∆S 4f (T M ) estimated above 2 K. The reduction in ∆S 4f from Rln4 at T M is considered to be due to the occurrence of a short-range ordering above T M , since the effect of the c-f hybridization is considered to be negligibly small, as suggested from the absence of -lnT behavior in ρ(T ).…”

Section: Specific Heatmentioning

confidence: 99%

“…Recently, we have succeeded in growing single crystals of SmBe 13 , and we performed ultrasonic measurements under high magnetic fields, which revealed the Γ 8 ground state rather than the Γ 7 ground state. 22) In addition, recent Mössbauer spectroscopy measurements revealed the trivalent state of the Sm ions at room temperature. 23) In this paper, we report the results of electrical resistivity (ρ), specific heat (C), and magnetization (M) measurements on single-crystalline SmBe 13 .…”

Section: Introductionmentioning

confidence: 99%

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Magnetically Ordered State and Crystalline-Electric-Field Effects in SmBe₁₃

et al. 2017

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The physical properties of single-crystalline SmBe 13 with a NaZn 13 -type cubic structure have been studied by electrical resistivity (ρ), specific heat (C), and magnetization (M) measurements in magnetic fields of up to 9 T. The temperature (T ) dependence of ρ shows normal metallic behavior without showing the Kondo -lnT behavior, suggesting the weak hybridization effect in this system. Analyses of the temperature dependence of C suggest that the Sm ions of this compound are trivalent and that the crystalline-electric-field (CEF) ground state is a Γ 8 quartet with a first-excited state of a Γ 7 doublet located at the energy scale of ∼ 90 K. Mean-field calculations based on the suggested CEF level scheme can reasonably well reproduce the T dependence of magnetic susceptibility (χ) below ∼ 70 K. These results in the paramagnetic state strongly indicate that the 4 f electrons are well localized with the Sm 3+ configuration. At low temperatures, the 4 f electrons undergo a magnetic order at T M ∼ 8.3 K, where χ(T ) shows an antiferromagnetic-like cusp anomaly. From the positive Curie-Weiss temperature obtained from the mean-field calculations and from a constructed magnetic phase diagram with multiple regions, we discussed the magnetic structure of SmBe 13 below T M , by comparing with other isostructural MBe 13 compounds showing helical-magnetic ordering.

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Section: Specific Heatmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Magnetically Ordered State and Crystalline-Electric-Field Effects in SmBe₁₃

et al. 2017

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“…In this study, we investigated structure parameters and phonon properties of a superconductor LaBe 13 with a superconducting transition temperature of ∼0.6 K [19], a possible helical magnet SmBe 13 with a magnetic transition temperature of T M = 8.3 K [15,28,29], and an unconventional HF superconductor UBe 13 [20] by x-ray diffraction (XRD) measurements in temperatures of down to 7 K. The results of the XRD measurements and Rietveld analyses are presented in Sec. III: the temperature dependence of the lattice parameter in subsection A, the fractional (0, y, z) coordinates in subsection B, and isotropic mean-square displacement parameters in subsection C.…”

Section: Introductionmentioning

confidence: 99%

Low-temperature x-ray crystal structure analysis of the cage-structured compounds MBe13(M=La,Sm,and U)

Hidaka

Nagata

Tabata

et al. 2018

Phys. Rev. Materials

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“…6,13) On the other hand, our recent studies on single crystals revealed that the CEF level scheme is the Γ 8 quartet ground state and the Γ 7 doublet first-excited state with energy separation of 90 K (the Γ 8 -Γ 7 level scheme). 11,14) In addition, its magnetic field-temperature (H -T ) phase diagram for H [001] consists of three regions below T M , as shown in Fig. 1(b).…”

mentioning

confidence: 99%

“…1(b). 11,14) To determine the magnetic structures in these ordering regions microscopically, neutron scattering is one of the most powerful methods, but there is a difficulty that a 149 Sm nucleus is a neutron absorber. Therefore, we performed the nuclear magnetic resonance (NMR) measurements on single crystalline sample in this study.…”

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confidence: 99%

Possible Magnetic Structure with a Tilted Helical Plane in SmBe13 Probed by 9Be-NMR Study

Hidaka,

Ihara,

Yanagisawa

et al. 2021

Preprint

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Be-NMR measurements were performed using single crystalline SmBe 13 in order to investigate a magnetic structure of a low-temperature ordering state microscopically. We observed a spectral broadening in the ordered state, and the broadened spectral shape depends on the magnetic field directions. By comparing the experimentally obtained and simulated NMR spectra for magnetic fields along the cubic [001] and [011] directions, we argue a helical structure with a basal plane tilted from the (001) plane in low-field ordering region under the assumption of a helical with a propagation vector of (0, 0, 1/3) found in other RBe 13 compounds (R = rare earths). Such a tilted helical structure is explained by a combination of an ellipse helical in the (001) plane and a longitudinal magnetic density wave along the [001] direction. Considering a magnetic easy axis parallel to [001] revealed by the magnetization measurements, the peculiar helical structure in SmBe 13 may be built on delicate balance among exchange interactions, dipole-dipole interaction, and single-ion magnetic anisotropy due to the crystalline electric field.

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High Magnetic Field Study of Elastic Constants of the Cage-structure Compound SmBe₁₃

Cited by 6 publications

References 20 publications

Magnetically Ordered State and Crystalline-Electric-Field Effects in SmBe₁₃

Magnetically Ordered State and Crystalline-Electric-Field Effects in SmBe₁₃

Low-temperature x-ray crystal structure analysis of the cage-structured compounds MBe13(M=La,Sm,and U)

Possible Magnetic Structure with a Tilted Helical Plane in SmBe13 Probed by 9Be-NMR Study

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High Magnetic Field Study of Elastic Constants of the Cage-structure Compound SmBe13

Cited by 6 publications

References 20 publications

Magnetically Ordered State and Crystalline-Electric-Field Effects in SmBe13

Magnetically Ordered State and Crystalline-Electric-Field Effects in SmBe13

Low-temperature x-ray crystal structure analysis of the cage-structured compounds MBe13(M=La,Sm,and U)

Possible Magnetic Structure with a Tilted Helical Plane in SmBe13 Probed by 9Be-NMR Study

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High Magnetic Field Study of Elastic Constants of the Cage-structure Compound SmBe₁₃

Magnetically Ordered State and Crystalline-Electric-Field Effects in SmBe₁₃

Magnetically Ordered State and Crystalline-Electric-Field Effects in SmBe₁₃