Nanoscale Mapping of the Magnetic Properties of (111)-Oriented La0.67Sr0.33MnO3

O’Shea, K.; MacLaren, Donald A.; McGrouther, D.; Schwarzbach, Danny; Jungbauer, M.; Hühn, S.; Moshnyaga, V.; Stamps, R. L.

doi:10.1021/acs.nanolett.5b01953

Cited by 18 publications

(12 citation statements)

References 86 publications

(115 reference statements)

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“…Additionally, the sub-Ångström resolving power achievable thanks to the new generation of aberration-corrected microscopes [42] these investigations at atomic resolution. Up to date, DPC in the Lorentz STEM mode has been successfully employed to probe magnetic [15,[43][44][45][46][47] and electric fields [48][49][50] at the nanoscale, whereas DPC STEM at high-resolution has been employed to map electric fields at atomic resolution [51][52][53][54].…”

Section: Dpc Stemmentioning

confidence: 99%

7 Probing local order in multiferroics by transmission electron microscopy

Campanini¹,

Erni²,

Rossell³

2021

Multiferroics

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The ongoing trend toward miniaturization has led to an increased interest in the magnetoelectric effect, which could yield entirely new device concepts, such as electric field-controlled magnetic data storage. As a result, much work is being devoted to developing new robust room temperature (RT) multiferroic materials that combine ferromagnetism and ferroelectricity. However, the development of new multiferroic devices has proved unexpectedly challenging. Thus, a better understanding of the properties of multiferroic thin films and the relation with their microstructure is required to help drive multiferroic devices toward technological application. This review covers in a concise manner advanced analytical imaging methods based on (scanning) transmission electron microscopy which can potentially be used to characterize complex multiferroic materials. It consists of a first broad introduction to the topic followed by a section describing the so-called phase-contrast methods, which can be used to map the polar and magnetic order in magnetoelectric multiferroics at different spatial length scales down to atomic resolution. Section 3 is devoted to electron nanodiffraction methods. These methods allow measuring local strains, identifying crystal defects and determining crystal structures, and thus offer important possibilities for the detailed structural characterization of multiferroics in the ultrathin regime or inserted in multilayers or superlattice architectures. Thereafter, in Section 4, methods are discussed which allow for analyzing local strain, whereas in Section 5 methods are addressed which allow for measuring local polarization effects on a length scale of individual unit cells. Here, it is shown that the ferroelectric polarization can be indirectly determined from the atomic displacements measured in atomic resolution images. Finally, a brief outlook is given on newly established methods to probe the behavior of ferroelectric and magnetic domains and nanostructures during in situ heating/electrical biasing experiments. These in situ methods are just about at the launch of becoming increasingly popular, particularly in the field of magnetoelectric multiferroics, and shall contribute significantly to understanding the relationship between the domain dynamics of multiferroics and the specific microstructure of the films providing important guidance to design new devices and to predict and mitigate failures.

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Section: Dpc Stemmentioning

confidence: 99%

7 Probing local order in multiferroics by transmission electron microscopy

Campanini¹,

Erni²,

Rossell³

2021

Multiferroics

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show abstract

Section: Dpc Stemmentioning

confidence: 99%

Probing local order in multiferroics by transmission electron microscopy

Campanini

Erni

Rossell

2019

Physical Sciences Reviews

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Abstract The ongoing trend toward miniaturization has led to an increased interest in the magnetoelectric effect, which could yield entirely new device concepts, such as electric field-controlled magnetic data storage. As a result, much work is being devoted to developing new robust room temperature (RT) multiferroic materials that combine ferromagnetism and ferroelectricity. However, the development of new multiferroic devices has proved unexpectedly challenging. Thus, a better understanding of the properties of multiferroic thin films and the relation with their microstructure is required to help drive multiferroic devices toward technological application. This review covers in a concise manner advanced analytical imaging methods based on (scanning) transmission electron microscopy which can potentially be used to characterize complex multiferroic materials. It consists of a first broad introduction to the topic followed by a section describing the so-called phase-contrast methods, which can be used to map the polar and magnetic order in magnetoelectric multiferroics at different spatial length scales down to atomic resolution. Section 3 is devoted to electron nanodiffraction methods. These methods allow measuring local strains, identifying crystal defects and determining crystal structures, and thus offer important possibilities for the detailed structural characterization of multiferroics in the ultrathin regime or inserted in multilayers or superlattice architectures. Thereafter, in Section 4, methods are discussed which allow for analyzing local strain, whereas in Section 5 methods are addressed which allow for measuring local polarization effects on a length scale of individual unit cells. Here, it is shown that the ferroelectric polarization can be indirectly determined from the atomic displacements measured in atomic resolution images. Finally, a brief outlook is given on newly established methods to probe the behavior of ferroelectric and magnetic domains and nanostructures during in situ heating/electrical biasing experiments. These in situ methods are just about at the launch of becoming increasingly popular, particularly in the field of magnetoelectric multiferroics, and shall contribute significantly to understanding the relationship between the domain dynamics of multiferroics and the specific microstructure of the films providing important guidance to design new devices and to predict and mitigate failures.

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“…According to Curie's law, the magnetization intensity decreases rapidly with increasing temperature when the temperature is approaching its Curie temperature (T C ) [10][11]. The ferromagnetic perovskite manganite oxide La 0.7 Sr 0.3 MnO 3 (LSMO) is an attractive half-metallic ferromagnetic oxide with low saturation magnetization, colossal magnetoresistance, and high conductive properties [12][13][14]. Therefore, it shows great potential in the next generation of electronic devices and magnetic field sensors.…”

Section: Introductionmentioning

confidence: 99%

Linearly shifting ferromagnetic resonance response of La0.7Sr0.3MnO3 thin film for body temperature sensors

Hou

Yao

et al. 2022

Front. Mater. Sci.

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Human body temperature not only reflects vital signs, but also affects the state of various organs through blood circulation, and even affects lifespan. Here a wireless body temperature detection scheme was presented that the temperature was extracted by investigating the out-of-plane (OP) ferromagnetic resonance (FMR) field of 10.2 nm thick La 0.7 Sr 0.3 MnO 3 (LSMO) film using electron paramagnetic resonance (EPR) technique. Within the range of 34–42 °C, the OP FMR field changes linearly with the increasing or decreasing temperature, and this variation comes from the linear responses of magnetization to the fluctuant temperature. Using this method, a tiny temperature change (< 0.1 °C) of organisms can be detected accurately and sensitively, which shows great potential in body temperature monitoring for humans and mammals.

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Nanoscale Mapping of the Magnetic Properties of (111)-Oriented La_0.67Sr_0.33MnO₃

Cited by 18 publications

References 86 publications

7 Probing local order in multiferroics by transmission electron microscopy

7 Probing local order in multiferroics by transmission electron microscopy

Probing local order in multiferroics by transmission electron microscopy

Linearly shifting ferromagnetic resonance response of La0.7Sr0.3MnO3 thin film for body temperature sensors

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