By Raymond Marie Ferdinand. Houtappel

Show description

Read or Download Order-Disorder in Hexagonal Lattices PDF

Best nonfiction_11 books

Viscous Flows. The Practical Use of Theory

Representing a special method of the research of fluid flows, Viscous Flows demonstrates the application of theoretical techniques and recommendations for studying and predicting fluid circulate in useful purposes. via seriously evaluating all appropriate periods of theoretical recommendations with experimental info and/or basic numerical strategies, it makes a speciality of the variety of validity of theoretical expressions instead of on their intrinsic personality.

Carbon. Proceedings of the Fourth Conference

Court cases of the Fourth convention on Carbon is a suite of manuscripts provided on the Fourth convention on Carbon, held on the collage of Buffalo on June 15-19, 1959, together backed by means of the yankee Carbon Committee and the college of Buffalo. The participants discover the manufacture, houses, and use of carbonaceous fabrics.

Masters: Earthenware: Major Works by Leading Artists

The most recent access within the renowned Masters sequence offers 38 of the world’s so much extraordinary potters and sculptors—and dozens of bright, useful, sculptural, and figurative items of earthenware to discover. Masters Earthenware finds the super mind's eye, innovation, and technical facility that today’s artists convey to the oldest ceramic medium.

Astronomical Cuneiform Texts: Babylonian Ephemerides of the Seleucid Period for the Motion of the Sun, the Moon, and the Planets

THE MOON IX PREFACE TO THE SPRINGER variation whilst this choice of Babylonian astronomical objective of column of the lunar ephemerides (by texts used to be released in 1955 (a date passed over by means of Aaboe) and the reason of the tactic of computing the eclipse textual content ACT No. 6o (by Hamilton mistake from the name page), it contained all texts of this sort that i may lay my fingers on.

Additional resources for Order-Disorder in Hexagonal Lattices

Sample text

While every honeycomb lattice has a transition temperature, it turns out that there are exceptional triangular lattices for which no transition temperature exists. These are the lattices for which one or all three interactions J i are negative, while all three interactions, or at least the two weakest, are equal in strength. e. JI + J2 > 0, J2 + J3 > 0 and J3 + JI > O. In the latter case Tc will be found from Sh (2JI/kTcl Sh (2J2/kTcl + Sh (2J2/kTc) Sh (2J3/k,Tcl + + Sh (2J3/kTc) Sh (2JI/kTcl = 1.

Hllll + 1121 + 1131) is the energy per atom of the completely ordered state at T = O. 13. Thermodynamic properties ot large isotropic triangular and honeycomb lattices. )t or A4l). e. those with equal interaction I in the three different directions I = II = 12 = 13' An isotropic honeycomb lattice has always a transition temperature, T e, which depends only on the strength III of the interaction by eh (21/kTe) = 2. HOUTAPPEL 28 tion temperature if J is positive. This transition temperature, T c ' is then given by exp (4J1kTc) = 3, (107) as Wan n i e r 7) found already.

K 0 r r i n g a for their stimulating interest and their constant advice, to Mr. T. A. S p r i n g e rand Mr. J. H. v. d. Mer w e for their kind help with some of the calculations and to Mrs. B. Dan i e I s- Hun t for her assistance with the translation into English. I am very grateful to the Lor e n t z Foundation, which enabled me, by a grant, to continue my study of the problem discussed in this article. A. H. 60(1941}252-262. L. 0 n sag e r, Phys. Rev. 65 (1944) 117-149. B. K auf man, Phys.

Download PDF sample

Rated 4.35 of 5 – based on 26 votes