# 相对电容率

（重定向自介電係數

2.0

3-15

11 - 12

18.9 (40 °F)

88 (32 °F),
55.3 (212 °F)

μm-nm

1000-100,000[4]
(106-108 at 100 Hz)

${\displaystyle \varepsilon _{r}\ {\stackrel {\mathrm {def} }{=}}\ {\frac {\varepsilon }{\varepsilon _{0}}}}$

${\displaystyle \mathbf {P} =\chi _{e}\varepsilon _{0}\mathbf {E} \,\!}$

${\displaystyle \mathbf {D} \ {\stackrel {\mathrm {def} }{=}}\ \varepsilon _{0}\mathbf {E} +\mathbf {P} \,\!}$

${\displaystyle \mathbf {D} =(1+\chi _{e})\varepsilon _{0}\mathbf {E} =\varepsilon \mathbf {E} \,\!}$

${\displaystyle \varepsilon _{r}=1+\chi _{e}}$

## 测量

${\displaystyle \varepsilon _{r}={\frac {C_{x}}{C_{0}}}}$

## 參考文獻

1. ^ Dielectric Constants of Materials页面存档备份，存于互联网档案馆） (2007). Clipper Controls.
2. ^ John David Jackson. Classical Electrodynamics Third Edition. New York: Wiley. 1998: 154 [2009-05-03]. ISBN 047130932X. （原始内容存档于2009-08-04）.
3. ^ Pohl, Herbert. Giant polarization in high polymers. Journal of Electronic Materials (Springer Boston).[永久失效連結]
4. ^ 谷歌搜尋引擎對於「超巨大介電常數」的搜尋結果
5. ^ Lide, D. R. CRC Handbook of Chemistry and Physics 85th. Boca Raton: CRC Press. 2004: p.8–141.