Table 11. Energy Storage Properties of Glass Ceramics^a.

compounds	εr (1 kHz, 300 K)	E (kV cm–1)	Wrec (J cm–3)	ref
14.4SrO–17.6BaO–32Nb2O5–36B2O3	117	1050	5.71	(386)
25.6BaO–6.4Na2O–32Nb2O5–36SiO2	∼90	1248	∼6.2	(409)
14.3SrO–17.5BaO–31.9Nb2O5–35.8B2O3–0.5ZnO + 0.5La2O3	131	1127	7.1	(400)
20BaO–20SrO–20Nb2O5-5Al2O3–1.5B2O3–33.5SiO2 + 0.2La2O3	92.4	1326	7.2	(406)
20SrO–20BaO–10Nb2O5–10TiO2–32SiO2–8Al2O3	52.9	1817	7.73	(410)
14.3SrO–17.5BaO– 31.9%Nb2O5–35.8%B2O3–0.5ZnO + 0.5Sm2O3	143.8	1132	8.15	(402)
14.4SrO–17.6BaO–32Nb2O5–36B2O3 + 1%Yb2O3	98.3	1398	8.5	(403)
15K2CO3–15SrCO3–30Nb2O5–32SiO2–4Al2O3–4B2O3	102 (10 kHz)	1411	8.99	(407)
20BaO–20SrO–20Nb2O5–5Al2O3–1.5B2O3–33.5SiO2 + 0.05MnO2	95.8	1471	9.2	(411)
42[0.2Na2O–0.8SrO]–28Nb2O5–30SiO2	53 (100 kHz)	2074	10.09	(412)
9.6K2O–22.4BaO–32Nb2O5–36SiO2	75	1937	12.06	(393)
25.6BaO–6.4K2O–32Nb2O5–36SiO2 + 1Gd2O3	83	1818	12.14	(405)
20BaO–12K2O–32Nb2O5–36SiO2	83	1859	12.7	(413)
15.16SrO–6.736BaO–10.104K2O–32Nb2O5–28B2O3–8P2O5	85.2	1844	12.83	(395)
6.4K2O–25.6SrO–32Nb2O5–36SiO2 + 3CaF2	114	1623	13.5	(414)
31.2SrO–7.8Na2O–26Nb2O5–35SiO2	91	1941	15.2	(390)
15 Bi2O3–15Nb2O5–40SiO2–30Al2O3	100	1861	15.3	(391)
65(48SrO–12Na2O–40Nb2O5)–35SiO2	124	1669	15.3	(392)
24BaO–6Na2O–30Nb2O5–10Al2O3–30SiO2	∼70	2322	16.6	(388)
15.4Na2O–15.4PbO–23.1Nb2O5–46.2SiO2	175	1486	17	(385)
25.6(0.4SrO–0.6BaO)–6.4K2O–32Nb2O5–36SiO2	118	1828	17.45	(394)
21.25BaO–1PbO–12.75Na2O–34Nb2O5–32SiO2	154	1638	18.29	(389)
25.6BaO–3.2Na2O–3.2K2O–32Nb2O5–36SiO2	22	4433	19	(396)
21.6BaO–2.4PbO–6Na2O–30Nb2O5–10Al2O3–30SiO2	137	1848	20.7	(384)
63SiO2–12BaO–16B2O3–9Al2O3	6	12,000	38.5	(397)

^at of the bulk ceramics is commonly >0.1 mm.