Magnetic susceptibility and electrical conductivity of the highest chromium germanide

Zagryazhskii, V. L.; Gel’d, P. V.; Shtol'ts, A.K.

doi:10.1007/bf00816595

Cited by 6 publications

(12 citation statements)

References 3 publications

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“…The powder XRD pattern also indicates a single phase of Cr 11 Ge 19 without impurities. The fitting results give the lattice constants a = b = 5.803(7) Å and c = 52.343(1) Å , which is in agreement with previous reports202224.…”

Section: Resultssupporting

confidence: 90%

“…3(d), which shows that T C increases monotonously with the increase of H . The T C is ~86 K when H = 10 kOe, which is close to that of 86 K reported by V. L. Zagryazhskii, et al 22. and 88 K by N. J. Ghimire, et al 24.…”

Section: Resultssupporting

confidence: 86%

“…Due to the noncentrosymmetric characteristic, the DM interaction may exist in Cr 11 Ge 19 , which makes it a candidate possessing a magnetic particle-like configuration19. The Cr 11 Ge 19 exhibits complex ferromagnetic ground state202122. Early work has demonstrated that the ground state of Cr 11 Ge 19 is a p -type semi-metallic ferromagnetism22.…”

mentioning

confidence: 99%

“…The Cr 11 Ge 19 exhibits complex ferromagnetic ground state202122. Early work has demonstrated that the ground state of Cr 11 Ge 19 is a p -type semi-metallic ferromagnetism22. However, a linear muffin tin orbital (LMTO) calculation of electronic density of states has suggested it to be an itinerant ferromagnet with low magnetic moment23.…”

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confidence: 99%

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Anisotropic magnetic coupling with a two-dimensional characteristic in noncentrosymmetric Cr11Ge19

Han

Zhang

Zhu

et al. 2016

Sci Rep

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In this work, we successfully synthesize the single crystal Cr11Ge19. The magnetism of the noncentrosymmetric Cr11Ge19 with itinerant ferromagnetic ground state is thoroughly investigated on the single crystal. Based on the variation measurements including the angular rotation, temperature, and magnetic field dependence of magnetization, we find that this material exhibits strong magnetic anisotropy along the c-axis. To clearly reveal the magnetic interactions, the critical behavior is studied using the modified Arrott plot, the Kouvel-Fisher method, and the critical isotherm technique. Combining these different methods, three main critical exponents (β, γ, and δ) are obtained. The critical exponent β is close to the theoretical prediction of a three-dimensional XY model with spin-dimensionality n = 2, indicating two-dimensional magnetic coupling. Meanwhile, the critical exponent γ suggests that the magnetic interaction is of long-range type with magnetic exchange distance decaying as J(r) ≈ r−4.61. We propose that the ferromagnetic ground state of Cr11Ge19 is formed by the polarized magnetic moments along the c-axis, while the long-range magnetic coupling is established within the ab plane.

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Section: Resultssupporting

confidence: 90%

Section: Resultssupporting

confidence: 86%

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confidence: 99%

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confidence: 99%

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Anisotropic magnetic coupling with a two-dimensional characteristic in noncentrosymmetric Cr11Ge19

Han

Zhang

Zhu

et al. 2016

Sci Rep

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“…is such a material [14][15][16] . It crystallizes in the noncentrosymmetric space group P 4n2 belonging to the point group D 8 2d and orders ferromagnetically below about 90 K. Interestingly, D 2d is one of the crystallographic classes in which a ferromagnet is expected to have a thermody-namically stable magnetic vortex phase in a certain range of applied magnetic field.…”

Section: Introductionmentioning

confidence: 99%

Complex itinerant ferromagnetism in noncentrosymmetric Cr11Ge19

et al. 2012

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The noncentrosymmetric ferromagnet Cr 11 Ge 19 has been investigated by electrical transport, AC and DC magnetization, heat capacity, x-ray diffraction, resonant ultrasound spectroscopy, and first principles electronic structure calculations. Complex itinerant ferromagnetism in this material is indicated by nonlinearity in conventional Arrott plots, unusual behavior of AC susceptibility, and a weak heat capacity anomaly near the Curie temperature (88 K). The inclusion of spin wave excitations was found to be important in modeling the low temperature heat capacity. The temperature dependence of the elastic moduli and lattice constants, including negative thermal expansion along the c axis at low temperatures, indicates strong magneto-elastic coupling in this system. Calculations show strong evidence for itinerant ferromagnetism and suggest a noncollinear ground state may be expected.

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Point transform theory of liquid helium

Gross

1971

Annals of Physics

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Magnetic susceptibility and electrical conductivity of the highest chromium germanide

Cited by 6 publications

References 3 publications

Anisotropic magnetic coupling with a two-dimensional characteristic in noncentrosymmetric Cr11Ge19

Anisotropic magnetic coupling with a two-dimensional characteristic in noncentrosymmetric Cr11Ge19

Complex itinerant ferromagnetism in noncentrosymmetric Cr11Ge19

Point transform theory of liquid helium

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