Zobrazeno 1 - 10
of 298
pro vyhledávání: '"Smetana V"'
Autor:
Pakhira, Santanu, Lee, Y., Ke, Liqin, Smetana, V., Mudring, A. -V., Heitmann, Thomas, Vaknin, David, Johnston, D. C.
Publikováno v:
Phys. Rev. B 104, 094420 (2021)
CaCo2As2 is a unique itinerant system having strong magnetic frustration. Here we report the effect of electron doping on the physical properties resulting from Ni substitutions for Co. The A-type antiferromagnetic transition temperature TN = 52 K fo
Externí odkaz:
http://arxiv.org/abs/2107.02608
Autor:
Sangeetha, N. S., Pakhira, Santanu, Ding, Q. -P., Lee, H. -C., Smetana, V., Mudring, A. -V., Furukawa, Y., Johnston, D. C.
Publikováno v:
Proc. Nat. Acad. Sci. USA 118, e2108724118 (2021)
Single crystals of SrMn2P2 and CaMn2P2 were grown using Sn flux and characterized by single-crystal x-ray diffraction, electrical resistivity rho, heat capacity Cp, and magnetic susceptibility chi = M/H measurements versus temperature T and magnetiza
Externí odkaz:
http://arxiv.org/abs/2105.02394
The ternary-arsenide compound BaCo2As2 was previously proposed to be in proximity to a quantum-critical point where long-range ferromagnetic (FM) order is suppressed by quantum fluctuations. Here we report the effect of Ir substitution for Co on the
Externí odkaz:
http://arxiv.org/abs/2007.00097
Autor:
Sangeetha, N. S., Pakhira, Santanu, Ryan, D. H., Smetana, V., Mudring, A. -V., Johnston, D. C.
Publikováno v:
Phys. Rev. Materials 4, 084407 (2020)
The effects of Ni doping in Eu(Co{1-x}Ni{x})2As2 single crystals with x =0 to 1 grown out of self flux are investigated via crystallographic, electronic transport, magnetic, and thermal measurements. All compositions adopt the body-centered-tetragona
Externí odkaz:
http://arxiv.org/abs/2005.07614
Publikováno v:
Phys. Rev. B 102, 024410 (2020)
Single crystals of Ca[Co_(2-x)Ir_(x)]_(2-y)As2 with 0 <= x <= 0.35 and 0.10 <= y <= 0.14 have been grown using the self-flux technique and characterized by single-crystal x-ray diffraction (XRD), energy-dispersive x-ray spectroscopy, magnetization M
Externí odkaz:
http://arxiv.org/abs/2004.10693
Publikováno v:
Zeitschrift für Kristallographie - New Crystal Structures, Vol 221, Iss 4, Pp 434-434 (2006)
Externí odkaz:
https://doaj.org/article/a24fe3abfb234e56bc6a8ef71c303e50
Autor:
Sangeetha, N. S., Wang, L. L., Smirnov, A. V., Smetana, V., Mudring, A. -V., Johnson, D. D., Tanatar, M. A., Prozorov, R., Johnston, D. C.
Publikováno v:
Phys. Rev. B 100, 094447 (2019)
Electron-doped Sr(Co{1-x}Ni{x})2As2 single crystals with compositions x = 0 to 0.9 were grown out of self-flux and SrNi2As2 single crystals out of Bi flux. The crystals were characterized using single-crystal x-ray diffraction (XRD), magnetic suscept
Externí odkaz:
http://arxiv.org/abs/1907.08238
Publikováno v:
Phys. Rev. B 100, 094438 (2019)
The Eu{+2} spins-7/2 in EuNi2As2 with the body-centered tetragonal ThCr2Si2 structure order antiferromagnetically below the Neel temperature TN =15 K into a helical antiferromagnetic (AFM) structure with the helix axis aligned along the tetragonal c
Externí odkaz:
http://arxiv.org/abs/1907.04813
Autor:
Sangeetha, N. S., Anand, V. K., Cuervo-Reyes, Eduardo, Smetana, V., Mudring, A. -V., Johnston, D. C.
Publikováno v:
Phys. Rev. B 97, 144403 (2018)
The compound EuCo{2-y}As2 with the tetragonal ThCr2Si2 structure is known to contain Eu{+2} ions with spin S = 7/2 that order below a temperature TN = 47 K into an antiferromagnetic (AFM) proper helical structure with the ordered moments aligned in t
Externí odkaz:
http://arxiv.org/abs/1801.08941
Publikováno v:
Phys. Rev. Lett. 119, 257203 (2017); 6 pages
The inference of Ying et al. [EPL 104, 67005 (2013)] of a composition-induced change from c-axis ordered-moment alignment in a collinear A-type antiferromagnetic (AFM) structure (AFMI) at small x to ab-plane alignment in an unknown AFM structure (AFM
Externí odkaz:
http://arxiv.org/abs/1711.03547