LST Relations - LST Relations

Japanese: LST の関係式 - えるえすてぃーのかんけいしき
LST Relations - LST Relations

...In such cases, the dielectric constant does not obey the Curie–Weiss law.
[LST relation]
The dielectric function of an ionic crystal consisting of two sublattices of positive and negative ions is given by (Kurosawa's formula) where the transverse wave optical mode frequency is ω T0 and the dielectric constants for frequencies sufficiently higher and sufficiently lower than ω T0 are ε(∞) and ε(0), respectively. The poles of this dielectric function represent ω T0 and the zeros represent the longitudinal wave optical mode frequency ω L0 , so the following relationship holds. …

*Some of the terminology that refers to the "LST equation" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…そのような場合,誘電率はキュリー=ワイスの法則に従わない。
[LSTの関係式]
 正イオンと負イオンの二つの副格子からなるイオン結晶の誘電関数は,横波光学モード周波数をωT0T0に比べて十分高い周波数および十分低い周波数に対する誘電率をそれぞれε(∞),ε(0)とすると,が成り立つ(黒沢の式)。この誘電関数の極点はωT0,零点は縦波光学モード周波数ωL0を表すので,の関係が成り立つ。…

※「LST の関係式」について言及している用語解説の一部を掲載しています。

出典|株式会社平凡社世界大百科事典 第2版について | 情報

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