Enhanced Magnetotransport in Nanopatterned Manganite Nanowires

Marín, Lorena; Morellón, L.; Algarabel, P. A.; Rodríguez, Luis Alfredo; Magén, Cesar; Ibarra, M. R.

doi:10.1021/nl402911w

Cited by 18 publications

(12 citation statements)

References 50 publications

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“…For instance, the earlier speculation that the presence of colossal magnetoresistance behavior is the result of emergent EPS has been widely confirmed 18,42 . However, the origin and formation of EPS are still debated.…”

Section: Resultsmentioning

confidence: 96%

Evolution of the intrinsic electronic phase separation in La0.6Er0.1Sr0.3MnO3 perovskite

Chen

Fan

Tong

et al. 2016

Sci Rep

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Magnetic and electronic transport properties of perovskite manganite La0.6Er0.1Sr0.3MnO3 have been thoroughly examined through the measurements of magnetization, electron paramagnetic resonance(EPR), and resistivity. It was found that the substitution of Er3+ for La3+ ions introduced the chemical disorder and additional strain in this sample. An extra resonance signal occurred in EPR spectra at high temperatures well above TC gives a strong evidence of electronic phase separation(EPS). The analysis of resistivity enable us to identify the polaronic transport mechanism in the paramagnetic region. At low temperature, a new ferromagnetic interaction generates in the microdomains of Er3+-disorder causing the second increase of magnetization. However, the new ferromagnetic interaction does not improve but decreases electronic transport due to the enhancement of interface resistance among neighboring domains. In view of a really wide temperature region for the EPS existence, this sample provides an ideal platform to uncover the evolution law of different magnetic structures in perovskite manganites.

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Section: Resultsmentioning

confidence: 96%

Evolution of the intrinsic electronic phase separation in La0.6Er0.1Sr0.3MnO3 perovskite

Chen

Fan

Tong

et al. 2016

Sci Rep

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“…The films were grown on 5 × 5 × 0.5 mm 3 (001)-oriented STO, LSAT, and LAO single-layer substrates. The deposition of single LSMO films was performed at a substrate temperature of 830 °C and oxygen pressure of 400 mTorr, as described elsewhere [12], [44], followed by a cooling cycle between 830 and 20 °C at an oxygen pressure of 700 Torr to favor optimal oxygen stoichiometry, at a cooling rate of 10 °C/min. In the case of the bilayers, the BTO film was then deposited at 830 °C and an oxygen pressure of 3 mTorr.…”

Section: Methodsmentioning

confidence: 99%

Control of Magnetic Anisotropy in Strained La_2/3Sr_1/3MnO₃ Films by a BaTiO₃ Overlayer in an Artificial Multiferroic System

Ordoñez¹,

Marín²,

Rodríguez³

et al. 2019

Preprint

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We studied in detail the in-plane magnetic properties in heterostructures based on a ferroelectric BaTiO3 overlayer deposited on a ferromagnetic La2/3Sr1/3MnO3 film grown on pseudocubic (001)-oriented SrTiO3, (LaAlO3)0.3(Sr2TaAlO6)0.7 and LaAlO3 substrates. In this configuration, the combination of both functional perovskites constitutes an artificial multiferroic system with potential applications in spintronic devices based on the magnetoelectric effect. We have grown the La2/3Sr1/3MnO3 single layers and BaTiO3/La2/3Sr1/3MnO3 bilayers by pulsed-laser deposition technique. We analyzed the films structurally through X-ray reciprocal space maps, and high-angle annular dark field microscopy; magnetically, via thermal demagnetization curves and in-plane magnetization versus applied magnetic field loops, at room temperature. Our results indicate that the BaTiO3 layer induces an additional strain in the La2/3Sr1/3MnO3 layers close to their common interface. We observed that the presence of BaTiO3 on the surface of tensile-strained La2/3Sr1/3MnO3 films transforms the in-plane biaxial magnetic anisotropy present in the single layer towards an in-plane uniaxial magnetic anisotropy. Our experimental evidence suggests that this change in the magnetic anisotropy only occurs in tensile-strained La2/3Sr1/3MnO3 film and is favored by an additional strain on the La2/3Sr1/3MnO3 layer promoted by BaTiO3 film. These findings reveal an additional mechanism that alters the magnetic behavior of the ferromagnetic layer and, consequently, deserves future in-depth research to determine how it can modify the magnetoelectric coupling of this hybrid multiferroic system.

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“…Recently, large aspect-ratio (length-to-width >300) single-crystal nanowires of La 2/3 Ca 1/3 MnO 3 were also fabricated by combined optical and FIB lithographies, which preserved their functional properties [27]. Remarkably, an enhanced magnetoresistance value of 34 % in an applied magnetic field of 0.1 T in the narrowest 150-nm nanowire was obtained.…”

Section: Synthesis Techniques For One-dimensional Perovskite Manganitmentioning

confidence: 99%

One-Dimensional Perovskite Manganite Oxide Nanostructures: Recent Developments in Synthesis, Characterization, Transport Properties, and Applications

Li¹,

Liang²,

Wu³

et al. 2016

Nanoscale Res Lett

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One-dimensional nanostructures, including nanowires, nanorods, nanotubes, nanofibers, and nanobelts, have promising applications in mesoscopic physics and nanoscale devices. In contrast to other nanostructures, one-dimensional nanostructures can provide unique advantages in investigating the size and dimensionality dependence of the materials’ physical properties, such as electrical, thermal, and mechanical performances, and in constructing nanoscale electronic and optoelectronic devices. Among the one-dimensional nanostructures, one-dimensional perovskite manganite nanostructures have been received much attention due to their unusual electron transport and magnetic properties, which are indispensable for the applications in microelectronic, magnetic, and spintronic devices. In the past two decades, much effort has been made to synthesize and characterize one-dimensional perovskite manganite nanostructures in the forms of nanorods, nanowires, nanotubes, and nanobelts. Various physical and chemical deposition techniques and growth mechanisms are explored and developed to control the morphology, identical shape, uniform size, crystalline structure, defects, and homogenous stoichiometry of the one-dimensional perovskite manganite nanostructures. This article provides a comprehensive review of the state-of-the-art research activities that focus on the rational synthesis, structural characterization, fundamental properties, and unique applications of one-dimensional perovskite manganite nanostructures in nanotechnology. It begins with the rational synthesis of one-dimensional perovskite manganite nanostructures and then summarizes their structural characterizations. Fundamental physical properties of one-dimensional perovskite manganite nanostructures are also highlighted, and a range of unique applications in information storages, field-effect transistors, and spintronic devices are discussed. Finally, we conclude this review with some perspectives/outlook and future researches in these fields.

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Enhanced Magnetotransport in Nanopatterned Manganite Nanowires

Cited by 18 publications

References 50 publications

Evolution of the intrinsic electronic phase separation in La0.6Er0.1Sr0.3MnO3 perovskite

Evolution of the intrinsic electronic phase separation in La0.6Er0.1Sr0.3MnO3 perovskite

Control of Magnetic Anisotropy in Strained La_2/3Sr_1/3MnO₃ Films by a BaTiO₃ Overlayer in an Artificial Multiferroic System

One-Dimensional Perovskite Manganite Oxide Nanostructures: Recent Developments in Synthesis, Characterization, Transport Properties, and Applications

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Enhanced Magnetotransport in Nanopatterned Manganite Nanowires

Cited by 18 publications

References 50 publications

Evolution of the intrinsic electronic phase separation in La0.6Er0.1Sr0.3MnO3 perovskite

Evolution of the intrinsic electronic phase separation in La0.6Er0.1Sr0.3MnO3 perovskite

Control of Magnetic Anisotropy in Strained La2/3Sr1/3MnO3 Films by a BaTiO3 Overlayer in an Artificial Multiferroic System

One-Dimensional Perovskite Manganite Oxide Nanostructures: Recent Developments in Synthesis, Characterization, Transport Properties, and Applications

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Control of Magnetic Anisotropy in Strained La_2/3Sr_1/3MnO₃ Films by a BaTiO₃ Overlayer in an Artificial Multiferroic System