Perovskite oxide heteroepitaxy

Boschker, J.A.

doi:10.3990/1.9789036531276

Cited by 2 publications

(2 citation statements)

References 12 publications

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“…This is in full agreement with previously reported results [23] of a weak microscopic anisotropy with a six-fold symmetry, resulting in a macroscopically isotropic response. By utilizing the Néel model of magnetic anisotropy [31], which has been used to explain the magnetic anisotropy of (0 0 1) pc and (1 1 0) pc -oriented LSMO thin films, an analytical expression for the aniso tropy energy of a rhombohedral unit cell can been found [32]:…”

Section: Resultsmentioning

confidence: 99%

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

Bolstad¹,

Lysne²,

Hallsteinsen³

et al. 2018

J. Phys.: Condens. Matter

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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)-oriented LaSrMnO epitaxial thin films grown on NdGaO, SrTiO, and DyScO substrates. (The subscript pc denotes the pseudo-cubic symmetry.) The results show that LaSrMnO assumes a monoclinic unit cell on NdGaO and DyScO and a rhombohedral unit cell on SrTiO. For LaSrMnO on NdGaO and DyScO a uniaxial magnetic anisotropy is found, while LaSrMnO on SrTiO is magnetically isotropic. The Néel model is used to explain the anisotropy of the thin films on NdGaO and SrTiO, however, for LaSrMnO on DyScO the effect of octahedral rotations needs to be included through the single ion model. 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 and t electron levels than what is seen in (0 0 1)-oriented LaSrMnO thin films.

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Section: Resultsmentioning

confidence: 99%

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

Bolstad¹,

Lysne²,

Hallsteinsen³

et al. 2018

J. Phys.: Condens. Matter

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“…This second termination can be observed in the surface morphology by appearance of straight step edges and square holes, as described in the section on representative results. In that case, the surface treatment can be repeated, but the final annealing step should be performed at 920 °C for 30 min 26 .…”

Section: Discussionmentioning

confidence: 99%

Atomically Defined Templates for Epitaxial Growth of Complex Oxide Thin Films

Dral

Dubbink

Nijland

et al. 2014

JoVE

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Atomically defined substrate surfaces are prerequisite for the epitaxial growth of complex oxide thin films. In this protocol, two approaches to obtain such surfaces are described. The first approach is the preparation of single terminated perovskite SrTiO 3 (001) and DyScO 3 (110) substrates. Wet etching was used to selectively remove one of the two possible surface terminations, while an annealing step was used to increase the smoothness of the surface. The resulting single terminated surfaces allow for the heteroepitaxial growth of perovskite oxide thin films with high crystalline quality and well-defined interfaces between substrate and film. In the second approach, seed layers for epitaxial film growth on arbitrary substrates were created by Langmuir-Blodgett (LB) deposition of nanosheets. As model system Ca 2 Nb 3 O 10 -nanosheets were used, prepared by delamination of their layered parent compound HCa 2 Nb 3 O 10 . A key advantage of creating seed layers with nanosheets is that relatively expensive and size-limited single crystalline substrates can be replaced by virtually any substrate material.

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Perovskite oxide heteroepitaxy

Abstract: The background displays a scanning transmission electron microscopy image of a SrTiO 3 /La 0.67 Sr 0.33 MnO 3 /SrTiO 3 heterostructure.

Cited by 2 publications

References 12 publications

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

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

Atomically Defined Templates for Epitaxial Growth of Complex Oxide Thin Films

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Perovskite oxide heteroepitaxy

Abstract: The background displays a scanning transmission electron microscopy image of a SrTiO 3 /La 0.67 Sr 0.33 MnO 3 /SrTiO 3 heterostructure.

Cited by 2 publications

References 12 publications

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

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

Atomically Defined Templates for Epitaxial Growth of Complex Oxide Thin Films

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

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