Zobrazeno 1 - 10
of 565
pro vyhledávání: '"Downie R"'
Autor:
Chan, E., Lane, H., Pásztorová, J., Songvilay, M., Johnson, R. D., Downie, R., Bos, J-W. G., Rodriguez-Rivera, J. A., Cheong, S. -W., Ewings, R. A., Qureshi, N., Stock, C.
Publikováno v:
Phys. Rev. B 107, 144420 (2023)
MnSb$_{2}$O$_{6}$ is based on the noncentrosymmetric $P321$ space group with magnetic Mn$^{2+}$ ($S={5/2}$, $L\approx 0$) spins ordering below $T_{\mathrm{N}}=12$ K in a helicoidal structure. The ground state magnetic structure, expected to be built
Externí odkaz:
http://arxiv.org/abs/2304.05732
Autor:
Chan, E., Pásztorová, J., Johnson, R. D., Songvilay, M., Downie, R. A., Bos, J-W. G., Fabelo, O., Ritter, C., Beauvois, K., Niedermayer, Ch., Cheong, S. -W., Qureshi, N., Stock, C.
Publikováno v:
Phys. Rev. B 106, 064403 (2022)
MnSb$_{2}$O$_{6}$ is based on the structural chiral $P$321 space group #150 where the magnetic Mn$^{2+}$ moments ($S=5/2$, $L\approx 0$) order antiferromagnetically at $T_\mathrm{N}=12$ K. Unlike the related iron based langasite (Ba$_3$NbFe$_3$Si$_2$
Externí odkaz:
http://arxiv.org/abs/2207.10977
Publikováno v:
Phys. Rev. B 93, 224109 (2016)
Pressure-induced transitions from ordered intermetallic phases to substitutional alloys to semi-ordered phases were studied in a series of bismuth tellurides. Using angle-dispersive x-ray diffraction, the compounds Bi4Te5, BiTe, and Bi2Te were observ
Externí odkaz:
http://arxiv.org/abs/1606.02495
Publikováno v:
J. Phys.: Condens. Matter 27, 072202 (2015)
The crystal structure of the thermoelectric material tin selenide has been investigated with angle-dispersive synchrotron x-ray powder diffraction under hydrostatic pressure up to 27 GPa. With increasing pressure, a continuous evolution of the crysta
Externí odkaz:
http://arxiv.org/abs/1411.6528
Autor:
Popuri, S. R., Scott, A. J. M., Downie, R. A., Hall, M. A., Suard, E., Decourt, R., Pollet, M., Bos, J. -W. G.
Publikováno v:
RSC Advances 4, 33720 (2014)
The introduction of A-site vacancies in SrTiO3 results in a glass-like thermal conductivity while Nb substituted samples maintains good electrical conductivity. This unexpected result brings SrTiO3 one step closer to being a high-performing phonon-gl
Externí odkaz:
http://arxiv.org/abs/1411.0410
Publikováno v:
Phys. Rev. B 88, 214419 (2013)
Inelastic neutron scattering experiments were performed to investigate the crystalline electric field (CEF) excitations of Nd3+ (J = 9/2) in the iron pnictide NdFeAsO. The crystal field level structures for both the high-temperature paramagnetic phas
Externí odkaz:
http://arxiv.org/abs/1309.7323
Thermoelectric figures of merit, ZT > 0.5, have been obtained in arc-melted TiNiSn-based ingots. This promising conversion efficiency is due to a low lattice thermal conductivity, which is attributed to excess nickel in the half-Heusler structure.
Externí odkaz:
http://arxiv.org/abs/1301.0419
The phase stability of the (Bi2)m(Bi2Te3)n natural superlattices has been investigated through the low temperature solid state synthesis of a number of new binary BixTe1-x compositions. Powder X-ray diffraction revealed that an infinitely adaptive se
Externí odkaz:
http://arxiv.org/abs/1204.0356
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