A platform for making and transferring oxide films

Tsukazaki, Atsushi

doi:10.1038/d41586-020-00206-1

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05 February 2020

A platform for making and transferring oxide films

Crystalline films of technologically useful oxide materials have been grown by a method based on surface-modified substrates. Unlike usual oxide films, these can be easily transferred to any material.

Atsushi Tsukazaki⁰

Atsushi Tsukazaki
1. Atsushi Tsukazaki is at the Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan.
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Inorganic compounds that contain oxygen and at least two other elements are known as complex oxides. Crystalline films of these compounds have desirable properties such as superconductivity, magnetism and ferroelectricity (spontaneous electric polarization), and could be used in next-generation devices¹^–³ if they can be integrated with mature device technologies. Integration is typically achieved by growing films on compatible substrates using a method called epitaxy, but this approach works only for relatively limited material systems. In the past few years, free-standing membranes of certain oxides have been made⁴^,⁵ by removing epitaxial films from substrates using a process dubbed chemical lift-off. Now, writing in Nature, Kum et al.⁶ report a versatile method for producing a wide variety of complex-oxide films that can be easily transferred to any material.

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Nature 578, 41-42 (2020)

doi: https://doi.org/10.1038/d41586-020-00206-1

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