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Journal article
Effect of chemical pressure on the electronic phase transition in Ca1-xSrxMn7O12 films
APL materials, v 5(9), pp 096105-096105-7
01 Sep 2017
Abstract
We demonstrate how chemical pressure affects the structural and electronic phase transitions of the quadruple perovskite CaMn7O12 by Sr doping, a compound that exhibits a charge-ordering transition above room temperature making it a candidate for oxide electronics. We have synthesized Ca1-xSrxMn7O12 (0 <= x <= 0.6) thin films by oxide molecular beam epitaxy on(LaAlO3)(0.3)(SrAl0.5Ta0.5O3)(0.7) (LSAT) substrates. The substitution of Sr for Ca results in a linear expansion of the lattice, as revealed by X-ray diffraction. Temperature-dependent resistivity and X-ray diffraction measurements are used to demonstrate that the coupled charge-ordering and structural phase transitions can be tuned with Sr doping. An increase in Sr concentration acts to decrease the phase transition temperature (T*) from 426 K at x = 0 to 385 K at x = 0.6. The presence of a tunable electronic phase transition, above room temperature, points to the potential applicability of Ca1-xSrxMn7O12 in sensors or oxide electronics, for example, via charge doping. (C) 2017 Author(s).
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Details
- Title
- Effect of chemical pressure on the electronic phase transition in Ca1-xSrxMn7O12 films
- Creators
- A. Huon - Drexel UniversityD. Lee - Oak Ridge National LaboratoryA. Herklotz - Oak Ridge National LaboratoryM. R. Fitzsimmons - University of Tennessee at KnoxvilleH. N. Lee - Oak Ridge National LaboratoryS. J. May - Drexel University
- Publication Details
- APL materials, v 5(9), pp 096105-096105-7
- Publisher
- American Institute of Physics
- Number of pages
- 7
- Grant note
- W911NF-15-1-0133 / Army Research Office U.S. Department of Energy (DOE), Office of Science (OS), Office of Workforce Development for Teachers and Scientists, Office of Science Graduate Student Research (SCGSR) DE-SC0014664 / DOE; United States Department of Energy (DOE) U.S. DOE, OS, Basic Energy Sciences, Materials Sciences and Engineering Division (high temperature XRD characterization) Scientific User Facilities Division; United States Department of Energy (DOE)
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Radiation Oncology (and Nuclear Medicine); Materials Science and Engineering
- Web of Science ID
- WOS:000412099100005
- Scopus ID
- 2-s2.0-85029707360
- Other Identifier
- 991019169896504721
InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Collaboration types
- Domestic collaboration
- Web of Science research areas
- Materials Science, Multidisciplinary
- Nanoscience & Nanotechnology
- Physics, Applied