Morphology of amorphous<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mi mathvariant="normal">Fe</mml:mi><mml:mn>91</mml:mn></mml:msub><mml:msub><mml:mi mathvariant="normal">Zr</mml:mi><mml:mn>9</mml:mn></mml:msub><mml:mo>∕</mml:mo><mml:msub><mml:mi mathvariant="normal">Al</mml:mi><mml:mn>2</mml:mn></mml:msub><mml:msub><mml:mi mathvariant="normal">O</mml:mi><mml:mn>3</mml:mn></mml:msub></mml:mrow></mml:math>multilayers: Dewetting and crystallization

Liebig, Andreas; Korelis, Panagiotis; Lidbaum, Hans; Andersson, Gabriella; Leifer, Klaus; Hjörvarsson, Bjørgvin

doi:10.1103/physrevb.75.214202

Cited by 13 publications

(9 citation statements)

References 31 publications

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“…A possible explanation of the crystallization within the amorphous layers was put forward in [6]. Considering the difference in the activation energy for surface diffusion between Fe and Zr atoms, local changes of the chemical composition is to be expected.…”

Section: Discussionmentioning

confidence: 99%

“…The growth mode and structural stability of amorphous heterostructures depends strongly on interface related effects. For example, crystallization of an amorphous metal can even take place at an amorphous oxide interface [6]. Crystalline grains, with the size of approximately 3-4 nm, were formed mainly at the oxide interfaces partially caused by the dewetting properties of the metal.…”

Section: Introductionmentioning

confidence: 99%

“…In our previous study [6] we focused on the dewetting and crystallization within thicker (up to 13 nm) Fe 91 Zr 9 magnetic layers, when using Al 2 O 3 as a spacer in the multilayers. Here we address the structural and magnetic properties of Co 68 Fe 24 Zr 8 layers (up to 3 nm), deposited in a multilayer stack with Al 2 O 3 as a spacer.…”

Section: Introductionmentioning

confidence: 99%

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Structural and magnetic properties of multilayers

Lidbaum

Raanaei

Papaioannou

et al. 2010

Journal of Crystal Growth

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Structural and magnetic properties of multilayers

Lidbaum

Raanaei

Papaioannou

et al. 2010

Journal of Crystal Growth

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“…Such nanocrystallites can have a marked effect on the magnetic properties of materials such as the magnetization and anisotropy [9], which are fundamental in determining the energy cost of domain formation. Furthermore, nanocrystallites can act as pinning sites for domain walls as well as result in an increased surface roughness [20], which can also increase the coercive field. It is therefore clear that small differences in nanostructure and morphology will strongly impact the magnetic domain structure.…”

Section: Resultsmentioning

confidence: 99%

Giant magnetic domains in amorphous SmCo thin films

et al. 2014

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The potential for tuning of magnetic properties and the exceptional uniformity are among the features that make amorphous magnetic materials attractive for technology. Here it is shown that the magnetization reversal in amorphous SmCo thin films takes place through the formation of giant magnetic domains, over a centimeter across. The domain structure is found to be dictated by the direction of the imprinted in-plane easy axis and the film boundaries. This is a consequence of the size of the anisotropy and the structural uniformity of the films, which also allows the movement of millimeter-long domain walls over distances of several millimeters. The results demonstrate the possibility of tailoring the magnetic domain structure in amorphous magnets over a wide range of length scales, up to centimeters. Moreover, they highlight an important consequence of the structural perfection of amorphous films.

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“…15,25 To protect the magnetic layers from oxidation the sample stack started and ended with 3-nm-thick Al 2 O 3 layers resulting in a total multilayer thickness of 63 nm. An Ar sputtering gas of purity 99.9999% and pressure 3.0 mTorr was used during deposition.…”

Section: Methodsmentioning

confidence: 99%

Magnetic structure and diffracted magneto-optics of patterned amorphous multilayers

et al. 2010

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We present magneto-optical Kerr effect measurements of patterned arrays of Co 68 Fe 24 Zr 8 / Al 2 O 3 amorphous multilayers. The multilayers were patterned in two dimensions into two different arrangements of circular and ellipsoidal islands. Magnetization loops were recorded in a longitudinal geometry using both the specularly reflected beam as well as diffracted beams scattered off the patterned films. The magnetization of the patterned structures is significantly different from the magnetization of a continuous multilayer owing to the lateral confinement of the pattern and the introduction of additional dipolar coupling between the layers at the edges of the islands. By investigating the magnetic response at the different diffraction orders from the two different configurations of islands we are able to observe the magnetization at different length scales and determine the magnetic response of the circular and ellipsoidal islands individually.

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Morphology of amorphousFe91Zr9∕Al2O3multilayers: Dewetting and crystallization

Cited by 13 publications

References 31 publications

Structural and magnetic properties of multilayers

Structural and magnetic properties of multilayers

Giant magnetic domains in amorphous SmCo thin films

Magnetic structure and diffracted magneto-optics of patterned amorphous multilayers

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