Ceramics Processing Research Laboratory

 

Lattice constants and dielectric properties of various insulators lattice matched to YBa2Cu307-x©



	Lattice parameters		Mismatch	CTE
	a(Å)	b(Å)	c(Å)	a(%)	b(%)	c(%)(a)	(ppm/°C)

SrTiO3	3.905			2.0	0.7	0.1	10.3
LaAIO3	3.793			-0.9	-2.2	-3.0	
MgO	4.213			9.2	8.0	7.4	12.6
NdGaO3	3.837	3.889	3.853	0.3	0.3	-1.3	8.0
Y-ZrO2	5.101			-6.1	-7.5	-8.2	9.2
CeO2	5.411d			-0.04	-1.3	-2.0	8-11
BYC	3.827	3.877	11.709				12.0(b)
--------
(a)  Calculated with respect to c/3 for BYC
(b)  Average value for ceramic


		(hkl)		Dielectric   	Loss,
				Constant, E	tan d

SrTi03		(100)		277		0.0125
SrTiO3		(110)		170		0.0130
LaAIO3		(100)		23		0.007
MgO		(100)		9.62		0.0091
NdGaO3		(001)		20.2		0,002
Y-ZrO2		(100)		27.5		0.0054
CeO2		(100)		26d	
--------
(c) Dielectric constant, E, and loss, tan d, values at 1 MHz, measured at room
temperature.
(d) From: T. Inoue, Y. Yamamoto, S. Koyama, S. Suzukiand Y. Ueda, Appl. Phys.
Lett. 60, 1381 (1992)
(e) All values (except for CeO2) from: E.A. Geiss, R.L. Sandstrom, W.J.
Gallagher, A. Gupta, S.L. Shinde, R.F. Cook, E.I. Cooper, E.J.M. OA Sullivan,
J.M. Roldan, A.P. Segmuller, and J. Angilello, IBM J. Res. Develop. 34, 916
(1990)
---------
©CPRL, 1995

This site has been accessed at least several times since the counter was last reset on February 15, 2007.