2011/03/16 by Yoshihiko Okamoto, Masashi Tokunaga, Hiroyuki Yoshida +3 · 2 citations
Chemistry · Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Antiferromagnetism #Chemistry #Condensed matter physics #Magnetic and transport properties of perovskites and related materials #Magnetic field #Magnetization #Materials science #Physics #Physics of Superconductivity and Magnetism #Quantum mechanics #Spin (aerodynamics) #Thermodynamics #cond-mat.str-el
paper · pdf · doi:10.1103/physrevb.83.180407
published as Phys. Rev. B 83, 180407(R) (2011) · 4 pages, 4 figures. Phys. Rev. B, accepted
arxiv created 2011/03/16 · openalex publication_date 2011/05/04 · arxiv updated 2015/05/27 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
The magnetization of two spin-(1)/(2) kagome antiferromagnets, volborthite and vesignieite, has been measured in pulsed magnetic fields up to 68 T. A magnetization plateau is observed for each compound near the highest magnetic field. Magnetizations at saturation are approximately equal to 0.40Ms for both compounds, where Ms is the fully saturated magnetization, irrespective of a difference in the distortion of the kagome lattice between the two compounds. It should be noted that these values of magnetizations are significantly larger than Ms/3 predicted theoretically for the one-third magnetization plateau in the spin-(1)/(2) kagome antiferromagnet. The excess magnetization over Ms/3 is nearly equal to the sum of the magnetizations gained at the second and third magnetization steps in volborthite, suggesting that there is a common origin for the excess magnetization and the magnetization steps.