Novel Materials Preparation & Processing Methodologies

Personnel

Project Leader(s):
Thomas Lograsso

Principal Investigators:
Iver Anderson, Paul Canfield, Lawrence Jones, Thomas Lograsso, R. William McCallum

Overview

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:

  1. growth-based activities that have focused on identifying the operating limits for solution growth methods by defining stable growth regimes,
  2. 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,
  3. 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.

Highlights

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Publications

2009
Petrova A E; Krasnorussky V N; Lograsso T A; Stishov S M . 2009. High-pressure study of the magnetic phase transition in MnSi. Physical Review B. 79:100401. abstract
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Xing Q; Lograsso T A . 2009. Phase identification of quenched Fe-25at.% Ga. Scripta Materialia. 60:373-376. abstract
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Niazi A; Bud'ko S L; Schlagel D L; Yan J Q; Lograsso T A; Kreyssig A; Das S; Nandi S; Goldman A I; Honecker A; McCallum R W; Reehuis M; Pieper O; Lake B; Johnston D C . 2009. Single-crystal growth, crystallography, magnetic susceptibility, heat capacity, and thermal expansion of the antiferromagnetic S=1 chain compound CaV2O4. Physical Review B. 79:104432. abstract
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Ma C; Yan J Q; Dennis K W; McCallum R W; Tan X . 2009. Size-dependent magnetic properties of high oxygen content YMn2O5 +/-delta multiferroic nanoparticles. Journal of Applied Physics. 105:033908. abstract
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2008
Ni N; Tillman M E; Yan J Q; Kracher A; Hannahs S T; Bud'ko S L; Canfield P C . 2008. Effects of Co substitution on thermodynamic and transport properties and anisotropic H-c2 in Ba(Fe1-xCox)(2)As-2 single crystals. Physical Review B. 78:214515. abstract
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Prozorov R; Ni N; Tanatar M A; Kogan V G; Gordon R T; Martin C; Blomberg E C; Prommapan P; Yan J Q; Bud'ko S L; Canfield P C . 2008. Vortex phase diagram of Ba(Fe0.93Co0.07)(2)As-2 single crystals. Physical Review B. 78:224506. abstract
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McQueeney R J; Yan J Q; Chang S; Ma J . 2008. Determination of the exchange anisotropy in perovskite antiferromagnets using powder inelastic neutron scattering. Physical Review B. 78:184417. abstract
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Xing Q; Lograsso T A . 2008. Magnetic domains in magnetostrictive Fe-Ga alloys. Applied Physics Letters. 93:182501. abstract
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Schlagel D L; Yuhasz W M; Dennis K W; McCallum R W; Lograsso T A . 2008. Temperature dependence of the field-induced phase transformation in Ni50Mn37Sn13. Scripta Materialia. 59:1083-1086. abstract
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Sharma H R; Fournee V; Shimoda M; Ross A R; Lograsso T A; Gille P; Tsai A P . 2008. Growth of Bi thin films on quasicrystal surfaces. Physical Review B. 78:155416. abstract
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