Controlling magnetic anisotropy in La{sub 0.7}Sr{sub 0.3}MnO{sub 3} nanostructures

Journal Article · Mon Feb 03 00:00:00 EST 2014 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4863978· OSTI ID:22283302

Wahler, M.; Büttner, B.; Blaschek, H. -H.; Homonnay, N.; Wid, O. ^[1]; O'Shea, K. J.; McGrouther, D.; MacLaren, D. A. ^[2]

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1. Institut für Physik, Martin-Luther-Universität Halle-Wittenberg, D-06099 Halle (Germany)
2. SUPA, School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ (United Kingdom)

We have developed a chlorine based dry etching process for nanopatterning the ferromagnetic oxide La{sub 0.7}Sr{sub 0.3}MnO{sub 3} (LSMO). Large arrays of millions of identical structures have been fabricated from thin LSMO films by electron-beam lithography and reactive ion etching. SQUID magnetometry demonstrates that patterned nanostructures with lateral dimensions down to 100 nm retain their full magnetization and the Curie temperature of the bulk layer. In addition, their shape anisotropy is sufficient to overcome the crystalline anisotropy of the bulk. High resolution scanning transmission electron microscopy shows that crystallinity is preserved even at the edges of the nanostructures.

• OSTI ID: 22283302
• Journal Information: Applied Physics Letters, Vol. 104, Issue 5; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
77 NANOSCIENCE AND NANOTECHNOLOGY
ANISOTROPY
CHLORINE
CURIE POINT
ELECTRON BEAMS
ETCHING
FERROMAGNETIC MATERIALS
LANTHANUM COMPOUNDS
LAYERS
MAGNETIZATION
MANGANATES
MASKING
NANOSTRUCTURES
SQUID DEVICES
STRONTIUM COMPOUNDS
THIN FILMS
TRANSMISSION ELECTRON MICROSCOPY