期刊
JOURNAL OF PHYSICS-CONDENSED MATTER
卷 26, 期 5, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/0953-8984/26/5/055012
关键词
boundary polarization; magnetoelectric; XMCD-PEEM; antiferromagnetic domains
资金
- NSF through the Nebraska MRSEC [DMR 0213808]
- NRC/NRI
- CNFD
- C-SPIN, part of STARnet, a Semiconductor Research Corporation
- MARCO
- DARPA
- NSERC
- NRC
- CIHR
- Province of Saskatchewan
- WEDC
- University of Saskatchewan
We demonstrate that Fe2TeO6 is a magnetoelectric antiferromagnet with voltage-controllable boundary magnetization. This provides experimental evidence of the theoretical prediction that boundary magnetization is a universal property of magnetoelectric antiferromagnets including boundary magnetization at a surface orthogonal to the polar direction. Highly (110) textured Fe2TeO6 thin films were grown by pulsed laser deposition, terminating in Te-O at the (110) surface due to a surface reconstruction. Magnetic dc susceptibility measurements of both Fe2TeO6 powder and thin film samples confirm antiferromagnetic long-range order. Finally, measurements of x-ray magnetic circular dichroism combined with photoemission electron microscopy (XMCD-PEEM) provide a lower bound to the spin and angular magnetic moment of the surface Fe ions.
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