Zobrazeno 1 - 3
of 3
pro vyhledávání: '"Muegge, B. D."'
Autor:
Ueland, B. G., Lau, G. C., Freitas, R. S., Snyder, J., Dahlberg, M. L., Muegge, B. D., Duncan, E. L., Cava, R. J., Schiffer, P.
Publikováno v:
Phys. Rev. B 77, 144412 (2008)
We have studied the thermodynamics of the stuffed spin ice material, Dy2(DyxTi2-x)O7-x/2, in which additional Dy3+ replace Ti4+ in the pyrochlore Dy2Ti2O7. Heat capacity measurements indicate that these materials lose the spin ice zero point entropy
Externí odkaz:
http://arxiv.org/abs/0803.1163
Publikováno v:
J. Sol. St. Chem. 179 (2006), 3126-3135
Synthesis and crystal structures are described for the compounds Ln2(Ti2-xLnx)O7-x/2, where Ln = Tb, Dy, Ho, Er, Tm, Yb, Lu, and x ranges from 0 to 0.67. Rietveld refinements on X-ray powder diffraction data indicate that in Tb and Dy titanate pyroch
Externí odkaz:
http://arxiv.org/abs/cond-mat/0603735
Autor:
Lau, G. C., Freitas, R. S., Ueland, B. G., Muegge, B. D., Duncan, E. L., Schiffer, P., Cava, R. J.
Publikováno v:
Nature Physics 2, 249-253 (2006)
The third law of thermodynamics dictates that the entropy of a system in thermal equilibrium goes to zero as its temperature approaches absolute zero. In ice, however, a "zero point" or residual entropy can be measured - attributable to a high degene
Externí odkaz:
http://arxiv.org/abs/cond-mat/0603146