| Paper Abstract and Keywords |
| Presentation |
2026-06-04 14:50
Identification of tip magnetic properties suitable for high-sensitivity domain observation of BiFeO3-based multiferroic thin films with various magnetic properties
Karin Hatakeyama, Swati S. DAS, Genta Egawa, Satoru Yoshimura (Akita Univ.) |
| Abstract |
(in Japanese) |
(See Japanese page) |
| (in English) |
To optimize the magnetic properties of metallic magnetic tips for observing distinct magnetic and electric domains using magnetic force microscopy (MFM) and electric force microscopy (EFM) in various Bismuth ferrite (BiFeO3; BFO) based multiferroic thin films, various metallic magnetic tips with different magnetic properties were used. In particular, the MFM and EFM images of various BFO based multiferroic thin films, (Bi0.5La0.5)(Fe0.7Co0.3)O3 and (Bi0.5Nd0.5)(Fe0.7Co0.3)O3 with different saturation magnetization (Ms), were observed. The thickness of these films is 200 nm and 260 nm. These thin films were observed by metallic and magnetic Co-Cr-Pt coated MFM tips (30 nm thick) with varying Ms values. As the Ms of the Co-Cr-Pt coating tip increased, the MFM phase signal increased, while the EFM phase signal declined and even changed polarity. The reduction or change in the EFM signal observed by the metallic and magnetic Co-Cr-Pt-coated MFM tip with the higher Ms values was attributed to the very strong magnetic force, which dominates the electric force. By evaluating MFM and EFM images of BFO based thin films with various total magnetic moments (Ms × film thickness) using tips with various Ms, we found that there is an ideal combination of tip and BFO based thin film that provides phase signals of sufficient strength with the correct polarity in all images. These findings highlight the importance of selecting an MFM tip with appropriate magnetization to achieve accurate domain imaging in BFO based multiferroic thin films, which is crucial for advancing high-resolution characterization of magnetoelectric interactions. |
| Keyword |
(in Japanese) |
(See Japanese page) |
| (in English) |
Multiferroic thin film / induced magnetic/electric domain / Co-Cr-Pt MFM tips / saturation magnetization / / / / |
| Reference Info. |
ITE Tech. Rep., vol. 50, no. 15, MMS2026-37, pp. 1-6, June 2026. |
| Paper # |
MMS2026-37 |
| Date of Issue |
2026-05-28 (MMS) |
| ISSN |
Online edition: ISSN 2424-1970 |
| Download PDF |
|
| Conference Information |
| Committee |
IEICE-MRIS MMS TOHOKU |
| Conference Date |
2026-06-04 - 2026-06-05 |
| Place (in Japanese) |
(See Japanese page) |
| Place (in English) |
RIEC, Tohoku Univ. |
| Topics (in Japanese) |
(See Japanese page) |
| Topics (in English) |
Recording System, Head, Medium + General |
| Paper Information |
| Registration To |
MMS |
| Conference Code |
2026-06-MRIS-MMS-TOHOKU |
| Language |
Japanese |
| Title (in Japanese) |
(See Japanese page) |
| Sub Title (in Japanese) |
(See Japanese page) |
| Title (in English) |
Identification of tip magnetic properties suitable for high-sensitivity domain observation of BiFeO3-based multiferroic thin films with various magnetic properties |
| Sub Title (in English) |
|
| Keyword(1) |
Multiferroic thin film |
| Keyword(2) |
induced magnetic/electric domain |
| Keyword(3) |
Co-Cr-Pt MFM tips |
| Keyword(4) |
saturation magnetization |
| Keyword(5) |
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| Keyword(6) |
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| Keyword(7) |
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| Keyword(8) |
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| 1st Author's Name |
Karin Hatakeyama |
| 1st Author's Affiliation |
Akita University (Akita Univ.) |
| 2nd Author's Name |
Swati S. DAS |
| 2nd Author's Affiliation |
Akita University (Akita Univ.) |
| 3rd Author's Name |
Genta Egawa |
| 3rd Author's Affiliation |
Akita University (Akita Univ.) |
| 4th Author's Name |
Satoru Yoshimura |
| 4th Author's Affiliation |
Akita University (Akita Univ.) |
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| Speaker |
Author-4 |
| Date Time |
2026-06-04 14:50:00 |
| Presentation Time |
25 minutes |
| Registration for |
MMS |
| Paper # |
MMS2026-37 |
| Volume (vol) |
vol.50 |
| Number (no) |
no.15 |
| Page |
pp.1-6 |
| #Pages |
6 |
| Date of Issue |
2026-05-28 (MMS) |