Self-assembled multiferroic epitaxial BiFeO 3 –CoFe 2 O 4 nanocomposite thin films grown by RF magnetron sputtering
© 2018 The Royal Society of Chemistry. Self-assembled nanocomposites consisting of ferrimagnetic CoFe2O4 and ferroelectric BiFeO3 were grown on Nb-doped SrTiO3 (001) or SrTiO3-buffered Si (001) substrates using radio frequency magnetron sputtering. Spinel CoFe2O4 formed as epitaxial pillars within a...
| Main Authors: | , , , , , , , , , , |
|---|---|
| Other Authors: | |
| Format: | Article |
| Language: | English |
| Published: |
Royal Society of Chemistry (RSC)
2021
|
| Online Access: | https://hdl.handle.net/1721.1/135038 |
| _version_ | 1826215621320245248 |
|---|---|
| author | Kim, Tae Cheol Ojha, Shuchi Tian, Guo Lee, Seung Han Jung, Hyun Kyu Choi, Jun Woo Kornblum, Lior Walker, Frederick J Ahn, Charles H Ross, Caroline A Kim, Dong Hun |
| author2 | Massachusetts Institute of Technology. Department of Materials Science and Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Materials Science and Engineering Kim, Tae Cheol Ojha, Shuchi Tian, Guo Lee, Seung Han Jung, Hyun Kyu Choi, Jun Woo Kornblum, Lior Walker, Frederick J Ahn, Charles H Ross, Caroline A Kim, Dong Hun |
| author_sort | Kim, Tae Cheol |
| collection | MIT |
| description | © 2018 The Royal Society of Chemistry. Self-assembled nanocomposites consisting of ferrimagnetic CoFe2O4 and ferroelectric BiFeO3 were grown on Nb-doped SrTiO3 (001) or SrTiO3-buffered Si (001) substrates using radio frequency magnetron sputtering. Spinel CoFe2O4 formed as epitaxial pillars within a perovskite BiFeO3 matrix, similar to nanocomposites grown by pulsed laser deposition. CoFe2O4 and BiFeO3 grew with a cube-on-cube epitaxy on Nb-doped SrTiO3, with partial relaxation of the in-plane strain of BiFeO3. The sputter-grown nanocomposites showed an out-of-plane magnetic easy axis as a result of both the shape anisotropy of the pillars and the magnetoelastic anisotropy of CoFe2O4, but the latter was dominant. The BiFeO3 matrix exhibited ferroelectric domains, and the removal of BiFeO3 led to the reduction of magnetic anisotropy by the strain relaxation of CoFe2O4. For potential application in devices, the nanocomposites were integrated on buffered silicon substrates. Templating of the CoFe2O4 nanopillars was achieved by substrate patterning. These techniques facilitate the incorporation of multiferroic nanocomposites into memory and other devices. |
| first_indexed | 2024-09-23T16:36:49Z |
| format | Article |
| id | mit-1721.1/135038 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T16:36:49Z |
| publishDate | 2021 |
| publisher | Royal Society of Chemistry (RSC) |
| record_format | dspace |
| spelling | mit-1721.1/1350382023-01-27T21:04:56Z Self-assembled multiferroic epitaxial BiFeO 3 –CoFe 2 O 4 nanocomposite thin films grown by RF magnetron sputtering Kim, Tae Cheol Ojha, Shuchi Tian, Guo Lee, Seung Han Jung, Hyun Kyu Choi, Jun Woo Kornblum, Lior Walker, Frederick J Ahn, Charles H Ross, Caroline A Kim, Dong Hun Massachusetts Institute of Technology. Department of Materials Science and Engineering © 2018 The Royal Society of Chemistry. Self-assembled nanocomposites consisting of ferrimagnetic CoFe2O4 and ferroelectric BiFeO3 were grown on Nb-doped SrTiO3 (001) or SrTiO3-buffered Si (001) substrates using radio frequency magnetron sputtering. Spinel CoFe2O4 formed as epitaxial pillars within a perovskite BiFeO3 matrix, similar to nanocomposites grown by pulsed laser deposition. CoFe2O4 and BiFeO3 grew with a cube-on-cube epitaxy on Nb-doped SrTiO3, with partial relaxation of the in-plane strain of BiFeO3. The sputter-grown nanocomposites showed an out-of-plane magnetic easy axis as a result of both the shape anisotropy of the pillars and the magnetoelastic anisotropy of CoFe2O4, but the latter was dominant. The BiFeO3 matrix exhibited ferroelectric domains, and the removal of BiFeO3 led to the reduction of magnetic anisotropy by the strain relaxation of CoFe2O4. For potential application in devices, the nanocomposites were integrated on buffered silicon substrates. Templating of the CoFe2O4 nanopillars was achieved by substrate patterning. These techniques facilitate the incorporation of multiferroic nanocomposites into memory and other devices. 2021-10-27T20:10:27Z 2021-10-27T20:10:27Z 2018 2019-09-23T17:02:05Z Article http://purl.org/eprint/type/JournalArticle https://hdl.handle.net/1721.1/135038 en 10.1039/C8TC01192C Journal of Materials Chemistry C Creative Commons Attribution-Noncommercial-Share Alike http://creativecommons.org/licenses/by-nc-sa/4.0/ application/pdf Royal Society of Chemistry (RSC) Royal Society of Chemistry (RSC) |
| spellingShingle | Kim, Tae Cheol Ojha, Shuchi Tian, Guo Lee, Seung Han Jung, Hyun Kyu Choi, Jun Woo Kornblum, Lior Walker, Frederick J Ahn, Charles H Ross, Caroline A Kim, Dong Hun Self-assembled multiferroic epitaxial BiFeO 3 –CoFe 2 O 4 nanocomposite thin films grown by RF magnetron sputtering |
| title | Self-assembled multiferroic epitaxial BiFeO 3 –CoFe 2 O 4 nanocomposite thin films grown by RF magnetron sputtering |
| title_full | Self-assembled multiferroic epitaxial BiFeO 3 –CoFe 2 O 4 nanocomposite thin films grown by RF magnetron sputtering |
| title_fullStr | Self-assembled multiferroic epitaxial BiFeO 3 –CoFe 2 O 4 nanocomposite thin films grown by RF magnetron sputtering |
| title_full_unstemmed | Self-assembled multiferroic epitaxial BiFeO 3 –CoFe 2 O 4 nanocomposite thin films grown by RF magnetron sputtering |
| title_short | Self-assembled multiferroic epitaxial BiFeO 3 –CoFe 2 O 4 nanocomposite thin films grown by RF magnetron sputtering |
| title_sort | self assembled multiferroic epitaxial bifeo 3 cofe 2 o 4 nanocomposite thin films grown by rf magnetron sputtering |
| url | https://hdl.handle.net/1721.1/135038 |
| work_keys_str_mv | AT kimtaecheol selfassembledmultiferroicepitaxialbifeo3cofe2o4nanocompositethinfilmsgrownbyrfmagnetronsputtering AT ojhashuchi selfassembledmultiferroicepitaxialbifeo3cofe2o4nanocompositethinfilmsgrownbyrfmagnetronsputtering AT tianguo selfassembledmultiferroicepitaxialbifeo3cofe2o4nanocompositethinfilmsgrownbyrfmagnetronsputtering AT leeseunghan selfassembledmultiferroicepitaxialbifeo3cofe2o4nanocompositethinfilmsgrownbyrfmagnetronsputtering AT junghyunkyu selfassembledmultiferroicepitaxialbifeo3cofe2o4nanocompositethinfilmsgrownbyrfmagnetronsputtering AT choijunwoo selfassembledmultiferroicepitaxialbifeo3cofe2o4nanocompositethinfilmsgrownbyrfmagnetronsputtering AT kornblumlior selfassembledmultiferroicepitaxialbifeo3cofe2o4nanocompositethinfilmsgrownbyrfmagnetronsputtering AT walkerfrederickj selfassembledmultiferroicepitaxialbifeo3cofe2o4nanocompositethinfilmsgrownbyrfmagnetronsputtering AT ahncharlesh selfassembledmultiferroicepitaxialbifeo3cofe2o4nanocompositethinfilmsgrownbyrfmagnetronsputtering AT rosscarolinea selfassembledmultiferroicepitaxialbifeo3cofe2o4nanocompositethinfilmsgrownbyrfmagnetronsputtering AT kimdonghun selfassembledmultiferroicepitaxialbifeo3cofe2o4nanocompositethinfilmsgrownbyrfmagnetronsputtering |