Strain-driven oxygen deficiency in multiferroic<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msub><mml:mi>SrMnO</mml:mi><mml:mn>3</mml:mn></mml:msub></mml:math>thin films

Agrawal, Piyush; Guo, Jing; Yu, Pu; Hébert, C.; Passerone, Daniele; Erni, Rolf; Rossell, Marta D.

doi:10.1103/physrevb.94.104101

Cited by 61 publications

(59 citation statements)

References 38 publications

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“…It should be noted that the magnetization in LSMO:MgO dropped over 10 times when the MgO volume increases from 5% (260 emu cc −1 ) to 22% (25 emu cc −1 ). Strain induced oxygen vacancies formation in the LSMO phase could be partially responsible for such a significant drop in magnetization …”

Section: Functionality Tuning Driven By Strain Defect and Interfacementioning

confidence: 99%

Metal Oxide Nanocomposites: A Perspective from Strain, Defect, and Interface

et al. 2018

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Complex metal oxides, which show a variety of functional properties such as ferromagnetism, ferroelectricity, multi-ferroelectricity, superconductivity, and ionic conduction, have attracted much attention in the past decades. These exotic physical properties arise from a complex hierarchy of competing interactions among spin, charge, orbital, and lattice degrees of freedom. The development of advanced characterization techniques such as electron microscopy, neutron scattering, synchrotron scattering and imaging, spectroscopy at high magnetic fields, and others has enabled us to study the interactions among these degrees of freedom coupled with strain, defect, and interface Vertically aligned nanocomposite thin films with ordered two phases, grown epitaxially on substrates, have attracted tremendous interest in the past decade. These unique nanostructured composite thin films with large vertical interfacial area, controllable vertical lattice strain, and defects provide an intriguing playground, allowing for the manipulation of a variety of functional properties of the materials via the interplay among strain, defect, and interface. This field has evolved from basic growth and characterization to functionality tuning as well as potential applications in energy conversion and information technology. Here, the remarkable progress achieved in vertically aligned nanocomposite thin films from a perspective of tuning functionalities through control of strain, defect, and interface is summarized. Thin FilmsThe ORCID identification number(s) for the author(s) of this article can be found under https://doi.org/10.1002/adma.201803241. 12 11 12where c 11 and c 12 are elastic moduli of the film material. Epitaxial strain gradually changes with film thickness in perovskite manganites. Figure 3 shows reciprocal space mapping or RSM (103) of La 0.7 Ca 0.3 MnO 3 (LCMO) films on STO (001) substrates. It captures the gradual strain relaxation process with increasing film thickness in manganite thin films. When the film is very thin, the interface is coherent with

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Section: Functionality Tuning Driven By Strain Defect and Interfacementioning

confidence: 99%

Metal Oxide Nanocomposites: A Perspective from Strain, Defect, and Interface

et al. 2018

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“…STMO films were prepared by pulsed laser deposition on top of (001)-oriented single crystals of (La 0. 18 Magnetic and electric properties of the films were inspected in the broad range of conditions. Magnetic measurements were performed on a Quantum Design SQUID magnetometer (MPMS XL 7T) at the temperatures of 1.8-300 K and magnetic fields to 3 T. Reciprocating sample transport with the magnetic sensitivity of 10 À8 emu was used.…”

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confidence: 99%

Dielectric relaxation in epitaxial films of paraelectric-magnetic SrTiO3-SrMnO3 solid solution

Savinov

Bovtun

Tereshina-Chitrova

et al. 2018

Applied Physics Letters

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Magneto-dielectric properties of (A2+)MnO3-type perovskites are attractive for applications and stimulate extensive studies of these materials. Here, the complex dielectric and magnetic responses are investigated as in epitaxial films of SrTi0.6Mn0.4O3, solid solution of paraelectric SrTiO3 and magnetic SrMnO3. The impedance and resonance measurements at frequencies of 10−2–1010 Hz and temperatures of 10–500 K reveal broad dielectric anomalies centered at 100–200 K, while the films are paramagnetic at all temperatures. Analysis shows polaronic electrical conductivity behind the observed behavior. Electron-phonon correlations, rather than spin-phonon correlations, are suggested to produce the apparent magneto-dielectric responses in many multiferroic manganites.

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“…This prediction was soon confirmed in bulk SMO by partially substituting strontium with barium, which induced negative chemical pressure and led to a polar ferroelectric state [16]. Although a rich phase diagram has been proposed recently for a strained manganite sample from theoretical aspects [17][18][19], the experimental studies in SMO thin films and other related manganite systems so far have been limited to small tensile strain cases (∼1.6%) [20][21][22][23][24][25], and the study for larger tensile strain remains as a great challenge due to the difficulty to maintain the strain state of the film and obtain correct oxygen stoichiometry in synthesizing these samples [26][27][28].…”

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confidence: 99%

Strain-induced ferroelectricity and spin-lattice coupling in SrMnO3 thin films

et al. 2018

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Reprinted with permission from the American Physical Society: Guo, J. W., Wang, P. S., Yuan, Y., He, Q., Lu, J. L., Chen, T. Z., Yang, S. Z., Wang, Y. J., Erni, R., Rossell, M. D., Gopalan, V., Xiang, H. J., Tokura, Y. Yu, P. (2018). Strain-induced ferroelectricity and spin-lattice coupling in SrMnO3 thin lms. Physical Review B 97(23): 235135 c 2018 by the American Physical Society. Readers may view, browse, and/or download material for temporary copying purposes only, provided these uses are for noncommercial personal purposes. Except as provided by law, this material may not be further reproduced, distributed, transmitted, modied, adapted, performed, displayed, published, or sold in whole or part, without prior written permission from the American Physical Society.Additional information: Use policyThe full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-prot purposes provided that:• a full bibliographic reference is made to the original source • a link is made to the metadata record in DRO • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders.Please consult the full DRO policy for further details.

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Strain-driven oxygen deficiency in multiferroicSrMnO3thin films

Cited by 61 publications

References 38 publications

Metal Oxide Nanocomposites: A Perspective from Strain, Defect, and Interface

Metal Oxide Nanocomposites: A Perspective from Strain, Defect, and Interface

Dielectric relaxation in epitaxial films of paraelectric-magnetic SrTiO3-SrMnO3 solid solution

Strain-induced ferroelectricity and spin-lattice coupling in SrMnO3 thin films

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