T. Kevin Croat Publications
Recent Publications
T. J. Bernatowicz, T. K. Croat, and T.D. Daulton, "Origin and evolution of carbonaceous presolar grains in stellar environments", Meteorites and the Early Solar System II. D. S. Lauretta and H. Y. McSween, Jr., Univ. of Arizona, Tucson: pp. 109-126, (2006).
T. K. Croat, F. J. Stadermann, and T. J. Bernatowicz, "Presolar graphite from AGB stars: microstructure and s-process enrichment", Astrophys. J. 631 (2) pp. 976-978 (2005).
T.J. Bernatowicz, O. W. Akande, T.K. Croat, and R. Cowsik, "Constraints on Grain Formation around Carbon Stars from Laboratory Studies of Presolar Graphite", Astrophys. J. 631 (2) pp. 988-1000 (2005).
F. J. Stadermann, T. K. Croat, T. J. Bernatowicz, S. Amari,S. Messenger,R. M. Walker and E. Zinner, "Supernova graphite in the NanoSIMS: carbon, oxygen and titanium isotopic compositions of a spherule and its TiC sub-components", Geochim. Cosmochim. Acta, 69 (1) pp. 177-188 (2005).
T.K.Croat, T. Bernatowicz, S. Amari, S. Messenger, and F. J. Stadermann, “Structural, Chemical, and Isotopic Microanalytical Investigations of Graphite from Supernovae”, Geochim. Cosmochim. Acta, 67 (24) pp. 4705-4725 (2003).
Abstracts (LPSC, Metsoc, etc.)
T.K. Croat, “Rutile found within presolar graphites”,  Meteorit. Planet. Sci. 42, Abstract #5217, (2007).
K.M. Hynes and T.K. Croat, “Silicon carbide subgrains in presolar graphite from Murchison”,  Meteorit. Planet. Sci. 42, Abstract #5247, (2007).
T.K. Croat, F.J. Stadermann, and T.J. Bernatowicz, “Isotopic and TEM investigations of variations in presolar graphite morphology”,  Lunar Planet. Sci. XXXVIII, Abstract # 1484, (2007).
K.M. Hynes, T.K.. Croat, T. K., and T.J. Bernatowicz, “Microstructure of silicon carbides found within presolar graphite”,  Lunar Planet. Sci. XXXVIII, Abstract # 1693, (2007).
T.K. Croat and F.J. Stadermann, “Silicon Carbide within Presolar Graphite”,  Lunar Planet. Sci. XXXVII, Abstract # 2048, (2006).
K.M. Hynes, T.K. Croat and, S. Amari, and T. Bernatowicz, “A Transmission Electron Microscopy Study of Ultramicrotomed SiC-X Grains”,  Lunar Planet. Sci. XXXVII, Abstract # 2202, (2006).
T.K. Croat, F.J. Stadermann, and T. Bernatowicz, “Internal Grains Within KFC Graphites: Implications for Their Stellar Source”,  Lunar Planet. Sci. XXXVI, Abstract # 1507, (2005).
T. Bernatowicz, O.W. Akande, T.K. Croat, and R. Cowsik, “Constraints on Grain Formation Around Carbon Stars from Laboratory Studies of Presolar Graphite”,  Lunar Planet. Sci. XXXVI, Abstract # 1509, (2005).
T.K. Croat, F.J. Stadermann, E. Zinner, and T. Bernatowicz, “Coordinated isotopic and TEM studies of presolar graphites from Murchison”,  Lunar Planet. Sci. XXXV, Abstract # 1353, (2004).
F. J. Stadermann, T. K. Croat and T. Bernatowicz, "NanoSIMS determination of carbon and oxygen isotopic compositions of presolar graphites from the Murchison meteorite", Lunar Planet. Sci. XXXV Abstract #1758 (2004).
T.K. Croat, T. Bernatowicz, F.J. Stadermann, S. Messenger, and S. Amari, “TEM study of internal crystals in supernova graphites”,  Lunar Planet. Sci. XXXIV, Abstract # 1470, (2003).
F.J. Stadermann, T. Bernatowicz, T.K. Croat, E. Zinner, S. Messenger, and S. Amari, “Titanium and oxygen isotopic compositions of sub-micrometer TiC crystals within presolar graphite”,  Lunar Planet. Sci. XXXIV, Abstract # 1627, (2003).
F.J. Stadermann, T. Bernatowicz, T.K. Croat, E. Zinner, S. Messenger, and S. Amari, “NanoSIMS isotopic measurements of individual TiC crystals in a single presolar graphite grain”,  Meteorit. Planet. Sci., 37, A136 (2002).
T.K. Croat, T. Bernatowicz, S. Amari, S. Messenger, and F.J. Stadermann, “Metallic Iron Condensed onto Titanium Carbides within Supernova Graphites”,  Meteorit. Planet. Sci., 37, A39 (2002).
F.J. Stadermann, T. Bernatowicz, T.K. Croat, E. Zinner, S. Messenger, and S. Amari, “Presolar Graphite in the NANOSIMS: A Detailed Look at the Isotopic Makeup of the Spherule and its Sub-components”,  Lunar Planet. Sci. XXXIII, Abstract # 1796, (2002).
T.K. Croat, T. Bernatowicz, F.J. Stadermann, S. Messenger, and S. Amari, “Coordinated Isotopic and TEM Studies of a Supernova Graphite”,  Lunar Planet. Sci. XXXIII, Abstract # 1315, (2002).
Earlier work
G.W. Lee, A.K. Gangopadhyay, T.K. Croat, T. J. Rathz, R.W. Hyers, J. Rogers, and K.F. Kelton, "Link between liquid structure and the nucleation barrier for icosahedral quasicrystal, polytetrahedral, and simple crystalline phases in Ti-Zr-Ni alloys: Verification of Frank’s hypothesis" Phys. Rev. B, 72 (17), 174107 (2005).
T.K. Croat, A.K. Gangopadhyay, and K.F. Kelton,  “Crystallization in Al88RE8Ni4 Glass Forming Alloys”,  Philosophical Mag. A, 82, 2483 (2002).
G.W. Lee, T.K. Croat, A.K. Gangopadhyay, and K.F. Kelton, "Icosahedral-phase formation in as-cast Ti-Zr-Ni alloys", Philosophical Mag. Lett., 82 (5), 199 (2002).
T.K. Croat, J. Davis, A.K. Gangopadhyay, K.F. Kelton, G.W.Lee, J. Simmons, R.W. Hyers, M. B. Robinson, J. Rogers, L. Savage, and T. J. Rathz, “Phase Diagram and Electrostatic Levitation Undercooling Studies of Polytetrahedral Phases in Ti-Fe-Si-O and Ti-Zr-Ni Alloys”, Mater. Res. Soc. Symp. Proc., 643 (Quasicrystals), K1.3 (2001).
A.K.Gangopadhyay, T.K. Croat, and K.F. Kelton, “The Effect of Phase Separation on Subsequent Crystallization in Al88Gd6La2Ni4”, Acta Materialia, 48 (16), 4035 (2000).
T.K. Croat, A.K.Gangopadhyay, and K.F.Kelton, “Crystallization of Al-Gd-La-Ni Metallic Glass”, Mater. Res. Soc. Symp. Proc., 580 (Nucleation and Growth Processes in Materials), 251-256 (2000).
T.K. Croat, K.F. Kelton, D. Holland-Moritz, T.J. Rathz, and M.B. Robinson, “Containerless Solidification Studies of the a-1/1 Crystal Approximant in Ti-Cr-Si-O Alloys”, J. Materials Research , 14(11), 4208-4213 (1999).
T.K. Croat, K.F. Kelton, D. Holland-Moritz, T.J. Rathz, M.B. Robinson, "Containerless Solidification Studies of the 1/1 Phase in Ti-(Mn,Cr,Fe)-SiO Alloys", Mater. Res. Soc. Symp. Proc., 553(Quasicrystals), 43-8 (1999).
T.K. Croat and K.F. Kelton, "Time Dependent Nucleation in a Bulk Metallic Glass Forming Alloy", Mater. Res. Soc. Symp. Proc., 481( Phase Transformations and Systems Driven Far from Equilibrium), 137-142 (1998).
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