E0060

Crystallographic Texture in Ceramics and Metals. M.D. Vaudin, Ceramics Division, National Institute of Standards and Technology, Gaithersburg, MD 20899.

Crystallographic texture has a profound effect on the properties and performance of materials systems. The influences of crystal texture manifest themselves in a variety of ways. Examples include: the link between crystal structure and crystal morphology (and the use of crystal morphology to create texture); the effect of texture in thin film ceramics and metals on anisotropic properties such as elastic constants, piezoelectric coefficients and magnetocrystalline anisotropy; and the effect of texture on the intensities of diffraction peaks, which is exploited to make texture measurements. Texture research at NIST has increased in recent years, in part as a response to industrial needs for texture measurement tools that are readily available. We have developed an accurate technique for measuring fiber (axisymmetric) texture using a powder diffractometer. The need for a texture standard having sharp texture with a certified profile is currently being addressed. These studies will be discussed, and examples of texture drawn from both bulk and thin film materials will be presented.