Allergic
发表于 2025-3-26 21:56:59
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远足
发表于 2025-3-27 05:06:19
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狂怒
发表于 2025-3-27 08:00:43
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范围广
发表于 2025-3-27 10:50:30
Ferromagnetism, Antiferromagnetism, and Ferrimagnetism,hes and the material becomes paramagnetic. Well above the Curie temperature the susceptibility follows the Curie-Weiss law.where θ is the Curie constant; the temperature 6 is called the . is usually some degrees higher than θ.(see Fig. 19-4).
正面
发表于 2025-3-27 13:44:10
The Crystalline State, solids and liquids the distance between neighboring atoms is of the order of a few Angstroms, i.e., they contain 10.–10. atoms per cm.. This may be compared with a density of about 2.7 × 10. molecules per cm. in a gas at room temperature under one atmosphere, corresponding to an average distance of
不愿
发表于 2025-3-27 19:24:55
The Specific Heat of Solids and Lattice Vibrations,amount of work done by the system. In case the work done by the system is of a mechanical nature only, one may thus write. Now, . is, except for an arbitrary constant, determined uniquely by the temperature and volume of the system. Hence. and (2-1) may be rewritten in the form .The specific heat in
POINT
发表于 2025-3-27 23:23:04
Some Properties of Metallic Lattices,earest neighbors, the face-centered cubic lattice (f.c.c.) in which a given atom has twelve nearest neighbors, and the hexagonal close packed lattice (h.c.p.), also with a coordination number of twelve.
体贴
发表于 2025-3-28 02:59:11
Some Properties of Simple Alloys,on. An example of this type is austenite, which is an interstitial alloy of carbon in . iron (f.c.c.). Since the interstitial positions provide room only for relatively small atoms, interstitial solid solutions are likely to be formed with the elements H, B, C, N, and O; the approximate radii of the
自制
发表于 2025-3-28 08:33:21
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Autobiography
发表于 2025-3-28 12:00:51
Dielectric and Optical Properties of Insulators,ven here is essentially classical ; for the quantum theory of dielectrics we refer to the literature (see, for example, J. H. van Vleck, ., Oxford, New York, 1932). This chapter is divided into two parts : in part A we shall essentially be concerned with the static dielectric constant, in part B the