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Title: Effect of chemical pressure on the electronic phase transition in Ca 1-x Sr x Mn 7 O 12 films

Journal Article · · APL Materials
DOI:https://doi.org/10.1063/1.4994089· OSTI ID:1407986
 [1]; ORCiD logo [2]; ORCiD logo [2]; ORCiD logo [3]; ORCiD logo [2];  [1]
  1. Drexel Univ., Philadelphia, PA (United States). Dept. of Materials Science and Engineering
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Materials Science and Technology Division
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Quantum Condensed Matter Division; Univ. of Tennessee, Knoxville, TN (United States). Dept. of Physics and Astronomy

Here, 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 also 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. Furthemore, 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.

Research Organization:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC05-00OR22725; SC0014664
OSTI ID:
1407986
Alternate ID(s):
OSTI ID: 1392139
Journal Information:
APL Materials, Vol. 5, Issue 9; ISSN 2166-532X
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 8 works
Citation information provided by
Web of Science

References (36)

Investigation of the electronic structure of the charge-ordered phase in epitaxial and polycrystalline La 1 x Ca x Mn O 3 ( x = 0.55 , 0.67 ) perovskite manganites journal May 2008
Multiple magnetic interactions in A-site-ordered perovskite-structure oxides journal October 2014
Strong nonlinear current–voltage behaviour in perovskite-derivative calcium copper titanate journal October 2004
Giant Magnetoresistance in CaCu3Mn4O12-Based Oxides with Perovskite-Type Structure journal October 1999
Charge Disproportionation and Charge Transfer in A -site Ordered Perovskites Containing Iron journal October 2009
Bifunctional Oxygen Reaction Catalysis of Quadruple Manganese Perovskites journal November 2016
Dramatic variation of the multiferroic properties in Sr doped Ca 1-x Sr x Mn 7 O 12 journal May 2017
A steep-slope transistor based on abrupt electronic phase transition journal August 2015
Oxide Interfaces--An Opportunity for Electronics journal March 2010
Global phase diagram of perovskite manganites in the plane of quenched disorder versus one-electron bandwidth journal July 2004
High-Pressure Synthesis, Crystal Structures, and Properties of CdMn 7 O 12 and SrMn 7 O 12 Perovskites journal August 2015
A Novel Heavy-Fermion State in CaCu 3 Ru 4 O 12 journal September 2004
Electronic transition above room temperature in CaMn7O12 films journal October 2015
Giant dielectric constant response in a copper-titanate journal June 2000
Magnetic Transitions in Perovskites Ca(Mn3−xCux)Mn4012 journal March 1989
Magnetic and electric properties of CaMn 7 O 12 based multiferroic compounds: effect of electron doping journal May 2013
Phase coexistence in solid solutions journal August 2006
Temperature Dependence of Extended X-ray Absorption Fine Structure of Multiferroic CaMn 7 O 12 journal October 2015
Phase coexistence in the charge ordering transition in CaMn 7 O 12 journal May 2002
Homogeneity field and magnetoresistance of the Ca(Mn,Cu)7O12 solid solution prepared in oxygen journal January 2004
Temperature-induced A–B intersite charge transfer in an A-site-ordered LaCu3Fe4O12 perovskite journal March 2009
Resonant tunnelling in a quantum oxide superlattice journal June 2015
Twist of rhombohedra, spin helix, and “giant” polarization in a CaMn7O12 multiferroic crystal journal March 2016
Giant electronic polarization induced by a helical spin order in SrMn 7 O 12 : First-principles calculations journal December 2014
Structural and magnetic modulations in CaCu x Mn 7 − x O 12 journal April 2010
Giant Barrier Layer Capacitance Effects in CaCu3Ti4O12 Ceramics journal September 2002
Cubic structure and canted antiferromagnetism of CaMn7O12 doped with trivalent cations (Fe, Al, Cr) journal February 2014
Nature of low-temperature phase transitions in CaMn7O12 journal October 2005
Oxide Electronics Utilizing Ultrafast Metal-Insulator Transitions journal August 2011
New functional materials AC3B4O12 (Review) journal November 2007
A -site ordered quadruple perovskite oxides journal July 2016
Modulation of over 10 14  cm −2 electrons in SrTiO 3 /GdTiO 3 heterostructures journal May 2014
A-Site-Ordered Perovskites with Intriguing Physical Properties journal October 2008
Low-Temperature Structural Modulations in CdMn 7 O 12 , CaMn 7 O 12 , SrMn 7 O 12 , and PbMn 7 O 12 Perovskites Studied by Synchrotron X-ray Powder Diffraction and Mössbauer Spectroscopy journal April 2016
Soft-phonon-driven orbital order in CaMn 7 O 12 journal November 2016
Magneto-orbital helices as a route to coupling magnetism and ferroelectricity in multiferroic CaMn7O12 journal January 2012

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