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Takeuchi, Tetsuya; Yamada, Tsutomu; Miyako, Y.; Oda, Kenichiro; Kindo, Koichi; Becker, Bernd W.; Ramakrishnan, S.; Menovsky, A.A.; Nieuwenhuys, G. J.; Mydosh, J. A.

doi:10.1103/physrevb.56.10778

Cited by 11 publications

(6 citation statements)

References 12 publications

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“…Figure 3 shows the temperature dependence of the magnetization M ZFC (T ) measured around T N in various magnetic fields. As shown in the H-T phase diagram in the inset of figure 3, with increasing the magnetic field from 0.1 kOe to 70 kOe, T N slightly decreases from 41.5 K to 39.9 K. These characteristics are somewhat similar to those exhibited by two typical members of the U-based '235' compound, U 2 Ir 3 Si 5 [13] and U 2 Rh 3 Si 5 [22]. A well-defined susceptibility maximum appears at T N = 36 K for U 2 Ir 3 Si 5 and at T N = 25.6 K for U 2 Rh 3 Si 5 corresponding to the AFM phase transitions.…”

Section: Resultssupporting

confidence: 55%

“…However, compared with the (RE/An)XY and (RE/An)X 2 Y 2 systems, the (RE/An) 2 X 3 Y 5 compounds discovered so far as well as the research works on their physical properties are still relatively few. In particular, the physical properties and/or crystal structures of An 2 X 3 Y 5 compounds have been reported only for several silicides [16][17][18][19][20][21][22][23][24][25][26][27][28]. To date, there is no report on the An-based germanide An 2 X 3 Ge 5 .…”

Section: Introductionmentioning

confidence: 99%

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Magnetic and transport properties of new ternary uranium-based germanide U₂Rh₃Ge₅

Shimizu²,

Nakamura³

et al. 2020

J. Phys.: Condens. Matter

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A new ternary uranium germanide U2Rh3Ge5 has been successfully synthesized and investigated by means of magnetic susceptibility χ(T, H), isothermal magnetization M(T, H), electrical resistivity ρ(T), and specific heat C(T, H) measurements. This compound is found to crystallize in the U2Co3Si5-type orthorhombic structure. The low-field χ(T) shows a clear peak at T N = 41.5 K corresponding to an antiferromagnetic transition. The M(H) curve measured up to 70 kOe exhibits an H-linear behavior at 2 K with very small induced magnetic moments, while it shows upward curvature with increasing temperature, implying the possible presence of a metamagnetic transition in high-field region above 70 kOe. As the temperature decreases, ρ(T) increases slowly at T > T N and decreases rapidly at T < T N, which can be understood based on a semiconductor-like narrow band gap model (or the c-f hybridization effect) and an antiferromagnetic spin-wave model, respectively. No evidence of heavy-fermion behavior or superconductivity transition is observed at temperatures as low as 0.4 K. The obtained experimental results are discussed by comparing with those reported for the isomorphic compound U2Ir3Si5 and the quasi-isomorphic compound U2Rh3Si5.

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Section: Resultssupporting

confidence: 55%

Section: Introductionmentioning

confidence: 99%

Magnetic and transport properties of new ternary uranium-based germanide U₂Rh₃Ge₅

Shimizu²,

Nakamura³

et al. 2020

J. Phys.: Condens. Matter

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“…The magnitude of the effect of entering the antiferromagnetic phase for T < T N is smaller for the smaller sample, with larger scattering (see inset). Data taken with a capacitive dilatometer (•, Takeuchi et al [54]) and inferred from x-ray diffraction (○, Feyerherm et al [55]) are included for comparison. The difference in magnitude between FBG and X-ray data is satisfactorily explained by the strain transfer coefficient given by Equation (3) when using the parameters listed in Table 1.…”

Section: Figurementioning

confidence: 99%

Fiber Bragg Grating Dilatometry in Extreme Magnetic Field and Cryogenic Conditions

Jaime

Moya

Weickert

et al. 2017

Sensors

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In this work, we review single mode SiO2 fiber Bragg grating techniques for dilatometry studies of small single-crystalline samples in the extreme environments of very high, continuous, and pulsed magnetic fields of up to 150 T and at cryogenic temperatures down to <1 K. Distinct millimeter-long materials are measured as part of the technique development, including metallic, insulating, and radioactive compounds. Experimental strategies are discussed for the observation and analysis of the related thermal expansion and magnetostriction of materials, which can achieve a strain sensitivity (ΔL/L) as low as a few parts in one hundred million (≈10−8). The impact of experimental artifacts, such as those originating in the temperature dependence of the fiber’s index of diffraction, light polarization rotation in magnetic fields, and reduced strain transfer from millimeter-long specimens, is analyzed quantitatively using analytic models available in the literature. We compare the experimental results with model predictions in the small-sample limit, and discuss the uncovered discrepancies.

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“…25 K), the spin-lattice coupling enhances the downward splitting, and a ''catastrophic'' or ''bootstrap'' transition results [28][29][30]. Note that the phase transition is not driven by quadrupole ordering, but is magnetically driven with a large unit cell volume expansion as T decreases [8,9] due to the strong spin-lattice coupling.…”

mentioning

confidence: 97%

“…Another enigmatic, well-localized U compound is U 2 Rh 3 Si 5 . Discovered [7] in 1990, this quasiorthorhombic compound exhibits a single, dramatic first-order phase transition at 25.5 K in all bulk properties [8,9]. (U 2 Rh 3 Si 5 forms in the monoclinic structure, but the monoclinic distortion is so small that the compound is commonly represented in quasiorthorhombic symmetry.)…”

mentioning

confidence: 99%

Complete Elastic Tensor through the First-Order Transformation inU2Rh3Si5

et al. 2005

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The complete elastic tensor of U(2)Rh(3)Si(5) has been determined over the temperature range of 5-300 K, including the dramatic first-order transition to an antiferromagnetic state at 25.5 K. Sharp upward steps in the elastic moduli as the temperature is decreased through the transition reveal the first-order nature of the phase change. In the antiferromagnetic state the temperature dependence of the elastic moduli scales with the square of the ordered moment on the uranium ion, demonstrating strong spin-lattice coupling. The temperature dependence of the moduli well above the transition indicates coupling of the ultrasonic waves to the crystal electric field levels of the uranium ion where the lowest state is a singlet. The elastic constant data suggest that the first-order phase change is magnetically driven by a bootstrap mechanism involving the ground state singlet and a magnetically active crystal electric field level.

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Coupled spin-lattice transition inU2Rh3Si5

Cited by 11 publications

References 12 publications

Magnetic and transport properties of new ternary uranium-based germanide U₂Rh₃Ge₅

Magnetic and transport properties of new ternary uranium-based germanide U₂Rh₃Ge₅

Fiber Bragg Grating Dilatometry in Extreme Magnetic Field and Cryogenic Conditions

Complete Elastic Tensor through the First-Order Transformation inU2Rh3Si5

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Coupled spin-lattice transition inU2Rh3Si5

Cited by 11 publications

References 12 publications

Magnetic and transport properties of new ternary uranium-based germanide U2Rh3Ge5

Magnetic and transport properties of new ternary uranium-based germanide U2Rh3Ge5

Fiber Bragg Grating Dilatometry in Extreme Magnetic Field and Cryogenic Conditions

Complete Elastic Tensor through the First-Order Transformation inU2Rh3Si5

Contact Info

Product

Resources

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Magnetic and transport properties of new ternary uranium-based germanide U₂Rh₃Ge₅

Magnetic and transport properties of new ternary uranium-based germanide U₂Rh₃Ge₅