Formation of nanoscale magnetic bubbles in ferromagnetic insulating manganite La7/8Sr1/8MnO3

We have observed the response of spin arrangements to external magnetic fields in a multiorbital Mott insulator, ferromagnetic insulating manganite La7/8Sr1/8MnO3, by low-temperature in situ Lorentz microscopy. Magnetic fields normal to the plane of the thin-plate sample continuously change the widt...

Full description

Saved in:
Bibliographic Details
Published in:Applied physics letters 2012-10, Vol.101 (16)
Main Authors: Nagai, T., Nagao, M., Kurashima, K., Asaka, T., Zhang, W., Kimoto, K.
Format: Article
Language:English
Subjects:
Bubbles
Ferromagnetism
Insulators
Magnetic fields
Manganites
Nanocomposites
Nanomaterials
Nanostructure
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We have observed the response of spin arrangements to external magnetic fields in a multiorbital Mott insulator, ferromagnetic insulating manganite La7/8Sr1/8MnO3, by low-temperature in situ Lorentz microscopy. Magnetic fields normal to the plane of the thin-plate sample continuously change the width of domains in the serpentine-like domain structure, eventually giving rise to nanoscale elliptical magnetic bubbles of ∼200 nm major diameter at 3.6 kOe. The formation of these bubbles implies large magnetic anisotropy related to the orbital ordering and suggests the possibility of manipulating the bubbles using an electric field.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.4760266