Effect of (1 1 1)-oriented strain on the structure and magnetic properties of La0.7Sr0.3MnO3 thin films

Bolstad, T.; Lysne, E.; Hallsteinsen, I.; Arenholz, E.; Osterberg, U. L.; Tybell, T.

doi:10.1088/1361-648X/aac468

Title: Effect of (1 1 1)-oriented strain on the structure and magnetic properties of La_0.7Sr_0.3MnO₃ thin films

Abstract

Using strain, i.e. subtle changes in lattice constant in a thin film induced by the underlying substrate, opens up intriguing new ways to control material properties. We present a study of the effects of strain on structural and ferromagnetic properties of (1 1 1)_pc-oriented La_0.7Sr_0.3MnO₃ epitaxial thin films grown on NdGaO₃, SrTiO₃, and DyScO₃ substrates. (The subscript pc denotes the pseudo-cubic symmetry.) The results show that La_0.7Sr_0.3MnO₃ assumes a monoclinic unit cell on NdGaO₃ and DyScO₃ and a rhombohedral unit cell on SrTiO₃. For La_0.7Sr_0.3MnO₃ on NdGaO₃ and DyScO₃ a uniaxial magnetic anisotropy is found, while La_0.7Sr_0.3MnO₃ on SrTiO₃ is magnetically isotropic. The Néel model is used to explain the anisotropy of the thin films on NdGaO₃ and SrTiO₃, however, for La_0.7Sr_0.3MnO₃ on DyScO₃ the effect of octahedral rotations needs to be included through the single ion model. Finally, through examination of the Curie temperature of the strained films we suggest that (1 1 1)-strain has a different effect on the Jahn-Teller splitting of e_g and t_2g electron levels than what is seen in (0 0 1)_pc-oriented La_0.7Sr_0.3MnO₃ thin films.

Authors:

Bolstad, T. ^[1]; Lysne, E. ^[1]; Hallsteinsen, I. ^[2]; Arenholz, E. ^[3]; Osterberg, U. L. ^[1];

^[1]

Norwegian Univ. of Science and Technology, Trondheim (Norway). Dept. of Electronic Systems
Norwegian Univ. of Science and Technology, Trondheim (Norway). Dept. of Electronic Systems; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Advanced Light Source (ALS)
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Advanced Light Source (ALS)

Publication Date:: Thu May 31 00:00:00 EDT 2018

Research Org.:: Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)

Sponsoring Org.:: USDOE Office of Science (SC)

OSTI Identifier:: 1460335

Grant/Contract Number:: AC02-05CH11231; 231290

Resource Type:: Accepted Manuscript

Journal Name:: Journal of Physics. Condensed Matter

Additional Journal Information:: Journal Volume: 30; Journal Issue: 25; Journal ID: ISSN 0953-8984

Publisher:: IOP Publishing

Country of Publication:: United States

Language:: English

Subject:: 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; strain; LSMO; magnetic anisotropy; crystal symmetry

Citation Formats


                    Bolstad, T., Lysne, E., Hallsteinsen, I., Arenholz, E., Osterberg, U. L., and Tybell, T. Effect of (1 1 1)-oriented strain on the structure and magnetic properties of La0.7Sr0.3MnO3 thin films.  United States: N. p., 2018. 
Web.  doi:10.1088/1361-648X/aac468.

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                    Bolstad, T., Lysne, E., Hallsteinsen, I., Arenholz, E., Osterberg, U. L., & Tybell, T. Effect of (1 1 1)-oriented strain on the structure and magnetic properties of La0.7Sr0.3MnO3 thin films.  United States.  https://doi.org/10.1088/1361-648X/aac468

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                    Bolstad, T., Lysne, E., Hallsteinsen, I., Arenholz, E., Osterberg, U. L., and Tybell, T. Thu .  
"Effect of (1 1 1)-oriented strain on the structure and magnetic properties of La0.7Sr0.3MnO3 thin films".  United States.  https://doi.org/10.1088/1361-648X/aac468.  https://www.osti.gov/servlets/purl/1460335.

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@article{osti_1460335,

  title        = {Effect of (1 1 1)-oriented strain on the structure and magnetic properties of La0.7Sr0.3MnO3 thin films},

  author       = {Bolstad, T. and Lysne, E. and Hallsteinsen, I. and Arenholz, E. and Osterberg, U. L. and Tybell, T.},

  abstractNote = {Using strain, i.e. subtle changes in lattice constant in a thin film induced by the underlying substrate, opens up intriguing new ways to control material properties. We present a study of the effects of strain on structural and ferromagnetic properties of (1 1 1)pc-oriented La0.7Sr0.3MnO3 epitaxial thin films grown on NdGaO3, SrTiO3, and DyScO3 substrates. (The subscript pc denotes the pseudo-cubic symmetry.) The results show that La0.7Sr0.3MnO3 assumes a monoclinic unit cell on NdGaO3 and DyScO3 and a rhombohedral unit cell on SrTiO3. For La0.7Sr0.3MnO3 on NdGaO3 and DyScO3 a uniaxial magnetic anisotropy is found, while La0.7Sr0.3MnO3 on SrTiO3 is magnetically isotropic. The Néel model is used to explain the anisotropy of the thin films on NdGaO3 and SrTiO3, however, for La0.7Sr0.3MnO3 on DyScO3 the effect of octahedral rotations needs to be included through the single ion model. Finally, through examination of the Curie temperature of the strained films we suggest that (1 1 1)-strain has a different effect on the Jahn-Teller splitting of eg and t2g electron levels than what is seen in (0 0 1)pc-oriented La0.7Sr0.3MnO3 thin films.},

  doi          = {10.1088/1361-648X/aac468},

  journal      = {Journal of Physics. Condensed Matter},

  number       = 25,

  volume       = 30,

  place        = {United States},

  year         = {Thu May 31 00:00:00 EDT 2018},

  month        = {Thu May 31 00:00:00 EDT 2018}

}

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Title: Effect of (1 1 1)-oriented strain on the structure and magnetic properties of La0.7Sr0.3MnO3 thin films

Abstract

Citation Formats

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