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In-situ X-ray diffraction combined with scanning AC nanocalorimetry applied to a Fe_(0.84)Ni_(0.16) thin-film sample

Gregoire, John M. and Xiao, Kechao and McCluskey, Patrick J. and Dale, Darren and Cuddalorepatta, Gayatri and Vlassak, Joost J. (2013) In-situ X-ray diffraction combined with scanning AC nanocalorimetry applied to a Fe_(0.84)Ni_(0.16) thin-film sample. Applied Physics Letters, 102 (20). Art. No. 201902. ISSN 0003-6951. PMCID PMC3676369. doi:10.1063/1.4806972.

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We combine the characterization techniques of scanning AC nanocalorimetry and x-ray diffraction to study phase transformations in complex materials system. Micromachined nanocalorimeters have excellent performance for high-temperature and high-scanning-rate calorimetry measurements. Time-resolved X-ray diffraction measurements during in-situ operation of these devices using synchrotron radiation provide unprecedented characterization of thermal and structural material properties. We apply this technique to a Fe_(0.84)Ni_(0.16) thin-film sample that exhibits a martensitic transformation with over 350 K hysteresis, using an average heating rate of 85 K/s and cooling rate of 275 K/s. The apparatus includes an array of nanocalorimeters in an architecture designed for combinatorial studies.

Item Type:Article
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URLURL TypeDescription DOIArticle CentralArticle
Gregoire, John M.0000-0002-2863-5265
Additional Information:© 2013 AIP Publishing LLC. Received 4 April 2013; accepted 2 May 2013; published online 21 May 2013. The authors thank Aaron Lyndaker for assistance with the synchrotron experiments and James MacArthur for assistance with the custom electronics. This work was supported by the Materials Research Science and Engineering Center at Harvard University (NSF-DMR-0820484), the Air Force Office of Scientific Research (FA9550-12-1-0098), and the DOE Office of Basics Energy Sciences (DE-SC-0004889). The experiments were conducted at CHESS, which is supported by the NSF & NIH/NIGMS via NSF Award No. DMR-0936384. Device fabrication was supported by the Center for Nanoscale Systems at Harvard University (NSF-ECS-0335765).
Funding AgencyGrant Number
Harvard UniversityDMR-0820484
Air Force Office of Scientific Research (AFOSR)FA9550-12-1-0098
Department of Energy (DOE)DE-SC-0004889
Subject Keywords:calorimetry, cooling, heat treatment, heating, iron alloys, martensitic transformations, metallic thin films, nickel alloys, synchrotron radiation, X-ray diffraction
Issue or Number:20
Classification Code:PACS: 81.30.Kf; 64.70.kd; 68.55.-a; 81.40.Gh
PubMed Central ID:PMC3676369
Record Number:CaltechAUTHORS:20130813-135504917
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:39898
Deposited By: Tony Diaz
Deposited On:19 Aug 2013 18:23
Last Modified:09 Nov 2021 23:47

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