@article{2f26faf2e9c544c3831cbbecdff720e6,
title = "In-situ determination of the HfO2–Ta2O5-temperature phase diagram up to 3000°C",
abstract = "The previously unknown experimental HfO2–Ta2O5-temperature phase diagram has been elucidated up to 3000°C using a quadrupole lamp furnace and conical nozzle levitator system equipped with a CO2 laser, in conjunction with synchrotron X-ray diffraction. These in-situ techniques allowed the determination of the following: (a) liquidus, solidus, and invariant transformation temperatures as a function of composition from thermal arrest experiments, (b) determination of equilibrium phases through testing of reversibility via in-situ X-ray diffraction, and (c) molar volume measurements as a function of temperature for equilibrium phases. From these, an experimental HfO2–Ta2O5-temperature phase diagram has been constructed which is consistent with the Gibbs Phase Rule.",
author = "McCormack, {Scott J.} and Tseng, {Kuo Pin} and Weber, {Richard J.K.} and Denys Kapush and Ushakov, {Sergey V.} and Alexandra Navrotsky and Kriven, {Waltraud M.}",
note = "Funding Information: This work was funded by the National Science Foundation (NSF) under the Division of Materials Research, grant DMR 1411032. This research was carried out in part at the Frederick Seitz Materials Research Laboratory, Centre for Microanalysis of Materials at the University of Illinois at Urbana-Champaign. Sample preparation by laser melting and recording of cooling traces was performed at UC Davis and funded under the Division of Materials Research, NSF, grant DMR 1835848. Use of the Advanced Photon Source at Argonne National Laboratory was supported by the U. S. Department of Energy, Office of Science, Office of Basic Energy Sciences, under Contract No. DE-AC02-06CH11357 and was completed at beamlines 33-BM-C with the assistance of Dr. Jenia (Evguenia) Karapetrova and at 6-ID-D with the assistance of Dr. Chris Benmore. Special thanks go to members of the Kriven Research Group: Andrew Steveson, Kevin Seymour, Daniel Ribero-Rodriguez and Ben Hulbert who helped with the beamline experiments. Special thanks also go to the Illinois Scholar Undergraduate Research (ISUR) students: Nicole Crosby, Nicholas Sherman, Whitney Tso and Mathew Truskowski for their assistance with sample preparation. Funding Information: This work was funded by the National Science Foundation (NSF) under the Division of Materials Research, grant DMR 1411032. This research was carried out in part at the Frederick Seitz Materials Research Laboratory, Centre for Microanalysis of Materials at the University of Illinois at Urbana‐Champaign. Sample preparation by laser melting and recording of cooling traces was performed at UC Davis and funded under the Division of Materials Research, NSF, grant DMR 1835848. Use of the Advanced Photon Source at Argonne National Laboratory was supported by the U. S. Department of Energy, Office of Science, Office of Basic Energy Sciences, under Contract No. DE‐AC02‐ 06CH11357 and was completed at beamlines 33‐BM‐C with the assistance of Dr. Jenia (Evguenia) Karapetrova and at 6‐ID‐D with the assistance of Dr. Chris Benmore. Special thanks go to members of the Kriven Research Group: Andrew Steveson, Kevin Seymour, Daniel Ribero‐ Rodriguez and Ben Hulbert who helped with the beamline experiments. Special thanks also go to the Illinois Scholar Undergraduate Research (ISUR) students: Nicole Crosby, Nicholas Sherman, Whitney Tso and Mathew Truskowski for their assistance with sample preparation. Publisher Copyright: {\textcopyright} 2018 The American Ceramic Society",
year = "2019",
month = aug,
doi = "10.1111/jace.16271",
language = "English (US)",
volume = "102",
pages = "4848--4861",
journal = "Journal of the American Chemical Society",
issn = "0002-7863",
publisher = "American Chemical Society",
number = "8",
}