Novel Materials Preparation & Processing Methodologies
The growth, control and modification of novel materials in single crystal and polycrystalline form, represent a national core competency that is essential for scientific advancement within and across traditional disciplinary boundaries, and are critical components of the USDOE Basic Energy Sciences' mission. In support of this mission, the Novel Materials Preparation and Processing Methodologies project strengthens the materials synthesis efforts of the Ames Laboratory.
The objectives of Novel Materials Preparation are to quantify and control processing-structure-property relationships: the basic science of how chemical inhomogeneities and structural defects affect properties of highly responsive materials; advance the ability to synthesize and characterize high purity, high quality materials, primarily in single crystal form; develop unique capabilities and processing knowledge in the preparation, purification, and fabrication of metallic elements and alloys.
Our efforts are grouped into three areas:
- growth-based activities that have focused on identifying the operating limits for solution growth methods by defining stable growth regimes,
- materials-focused investigations of highly responsive materials systems where synthesis challenges often limit the science and where careful control of synthesis structure relations are vital for understanding materials behavior,
- development of single crystals facilities that broaden and enhance our growth capabilities to address a wider range of materials.
In addition, the Materials Preparation Center, a specialized research center managed through the BES Synthesis & Processing core research area, provide high-purity, high-quality, and well-characterized materials in support of scientific research programs at the Ames Laboratory the general scientific community.
Noakes T C Q; Bailey P; McConville C F; Draxler M; Walker M; Brown M G; Hentz A; Woodruff D P; Lograsso T A; Ross A R; Smerdon J A; Leung L; McGrath R . 2010. Two- and three-dimensional growth of Bi on i-Al-Pd-Mn studied using medium-energy ion scattering. Physical Review B. 82:195418.
Petrova A E; Krasnorussky V N; Shikov A A; Yuhasz W M; Lograsso T A; Lashley J C; Stishov S M . 2010. Elastic, thermodynamic, and electronic properties of MnSi, FeSi, and CoSi. Physical Review B. 82:155124.
Ricci A; Poccia N; Joseph B; Barba L; Arrighetti G; Ciasca G; Yan J Q; McCallum R W; Lograsso T A; Zhigadlo N D; Karpinski J; Bianconi A . 2010. Structural phase transition and superlattice misfit strain of RFeAsO (R=La, Pr, Nd, Sm). Physical Review B. 82:144507.
Smerdon J A; Cross N; Dhanak V R; Sharma H R; Young K M; Lograsso T A; Ross A R; McGrath R . 2010. Structure and reactivity of Bi allotropes on the fivefold icosahedral Al-Pd-Mn quasicrystal surface. Journal of Physics-Condensed Matter. 22:345002.
Cao G H; Becker A T; Wu D; Chumbley L S; Lograsso T A; Russell A M; Gschneidner K A . 2010. Mechanical properties and determination of slip systems of the B2 YZn intermetallic compound. Acta Materialia. 58:4298-4304.
Zhou J S; Alonso J A; Pomjakushin V; Goodenough J B; Ren Y; Yan J Q; Cheng J G . 2010. Intrinsic structural distortion and superexchange interaction in the orthorhombic rare-earth perovskites RCrO3. Physical Review B. 81:214115.
Xing Q; Kramer M J; Wu D; Lograsso T A . 2010. Influence of surface oxidation on transmission electron microscopy characterization of Fe-Ga alloys. Materials Characterization. 61:598-602.
Xing Q; Wu D; Lograsso T A . 2010. Magnetoelasticity of Fe-Si single crystals. Journal of Applied Physics. 107:09a911.
Petculescu G; Mandru A O; Yuhasz W M; Lograsso T A; Wun-Fogle M; Restorff J B; Clark A E; Hathaway K B . 2010. The effect of partial substitution of Ge for Ga on the elastic and magnetoelastic properties of Fe-Ga alloys. Journal of Applied Physics. 107:09a926.