Skip to main content Accessibility help
×
Home
Hostname: page-component-cf9d5c678-j7tnp Total loading time: 0.267 Render date: 2021-08-06T01:19:24.685Z Has data issue: true Feature Flags: { "shouldUseShareProductTool": true, "shouldUseHypothesis": true, "isUnsiloEnabled": true, "metricsAbstractViews": false, "figures": true, "newCiteModal": false, "newCitedByModal": true, "newEcommerce": true, "newUsageEvents": true }

Highly crystalline core-shell FeCo-CoFe2O4 nanostructures

Published online by Cambridge University Press:  27 September 2013

Brigitte Paterson
Affiliation:
Department of Physics, The Catholic University of America, Washington, DC 20064, USA The Vitreous State Laboratory, The Catholic University of America, Washington, DC 20064, USA
Parshu Gyawali
Affiliation:
The Vitreous State Laboratory, The Catholic University of America, Washington, DC 20064, USA
David McKeown
Affiliation:
The Vitreous State Laboratory, The Catholic University of America, Washington, DC 20064, USA
Andrew Buechele
Affiliation:
The Vitreous State Laboratory, The Catholic University of America, Washington, DC 20064, USA
Ian L. Pegg
Affiliation:
Department of Physics, The Catholic University of America, Washington, DC 20064, USA The Vitreous State Laboratory, The Catholic University of America, Washington, DC 20064, USA
John Philip
Affiliation:
Department of Physics, The Catholic University of America, Washington, DC 20064, USA The Vitreous State Laboratory, The Catholic University of America, Washington, DC 20064, USA
Corresponding
E-mail address:
Get access

Abstract

Highly crystalline core-shell FeCo-CoFe2O4 nanowires were obtained from a three step process. Initially, CoFe2O4 nanowires were grown using electrospinning and annealing at higher temperatures. Through a thermal reduction under controlled conditions, CoFe2O4 nanostructures were converted to FeCo alloy nanowires. Then by natural oxidation, a highly crystalline shell of CoFe2O4 formed over the FeCo core structure. Structural and magnetic characterizations revealed the presence of highly crystalline FeCo-Co2FeO4 core-shell structure. Magnetically, the soft FeCo phase switches at a lower magnetic field compared to the hard CoFe2O4 phase, yielding an irregular hysteresis loop with a squeezed loop in the middle. The FeCo/CoFe2O4 core-shell is stable and it retains its structure for a prolonged duration.

Type
Research Article
Copyright
© EDP Sciences, 2013

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Cullity, B.D., Introduction to Magnetic Materials (IEEE Press, Piscatawny, NJ, 2009), p. 466Google Scholar
Anderson, S., Korenivsk, V., J. Appl. Phys. 107, 09D711 (2010)CrossRef
Ren, Y.H., Wu, C., Gong, Y., Pettiford, C., Sun, N.X., J. Appl. Phys. 105, 073910 (2009)CrossRef
Che, R.C., Peng, L.M., Duan, X.F., Chen, Q., Liang, X.L., Adv. Mater. 16, 401 (2004)CrossRef
Ramos, A.V., Guittet, M.-J., Moussy, J.-B., Mattana, R., Deranlot, C., Petroff, F., Gatel, C., Appl. Phys. Lett. 91, 122107 (2007)CrossRef
Jaffari, G.H., Ali, S.R., Hasanain, S.K., Güntherodt, G., Shah, S.I., J. Appl. Phys. 108, 063921 (2010)CrossRef
Gong, Y.X., Zhen, L., Jiang, J.T., Xu, C.Y., Shao, W.Z., J. Appl. Phys. 106, 064302 (2009)CrossRef
Sangmanee, M., Maensiri, S., Appl. Phys. A 97, 167 (2009)CrossRef
Li, D., McCann, J.T., Xia, Y., J. Am. Ceram. Soc. 89, 1861 (2006)CrossRef
Sawatzky, G.A., Van Der Woude, F., Morrish, A.H., J. Appl. Phys. 39, 1204 (1968)CrossRef
Sawatzky, G.A., Van Der Woude, F., Morrish, A.H., Phys. Rev. 187, 747 (1969)CrossRef
Ferreira, T.A.S., Waerenborgh, J.C., Mendonca, M.H.R.M., Nunes, M.R., Costa, F.M., Solid State Sci. 5, 383 (2003)CrossRef
Murray, P.J., Linnett, J.W., J. Phys. Chem. Solids 37, 1041 (1976)CrossRef
Murray, P.J., Linnett, J.W., J. Phys. Chem. Solids 37, 619 (1976)CrossRef
Uzunova, E.L., Mitov, I.G., Klissurski, D.G., Bull. Chem. Soc. Jpn 70, 1985 (1997)CrossRef
Waseda, Y., Shinoda, K., Sugiyama, K., Z. Naturforsch. A 50, 1199 (1995)
Ayyappan, S., Philip, J., Raj, B., J. Phys. Chem. C 113, 590 (2009)CrossRef
Wang, Z., Lazor, P., Saxena, S.K., O’Neill, H.S.C., Mater. Res. Bull. 37, 1589 (2002)CrossRef
Graves, P.R., Johnston, C., Campaniello, J.J., Mater. Res. Bull. 23, 1651 (1988)CrossRef
Chandramohan, P., Srinivasan, M.P., Velmurugan, S., Narasimhan, S.V., J. Solid State Chem. 184, 89 (2011)CrossRef
Franco, A. Jr., Silva, F.C.E., Appl. Phys. Lett. 96, 172505 (2010)CrossRef
Kittel, C., Introduction to Solid State Physics, 3rd edn. (John Wiley & Sons, New York, 1967)Google Scholar
Ashcroft, N.W., Mermin, N.D., Solid State Physics (Saunders College Publishing, Philadelphia, 1976)Google Scholar
Zeng, H., Li, J., Liu, J.P., Wang, Z.L., Sun, S., Nature 420, 395 (2002)CrossRef

Send article to Kindle

To send this article to your Kindle, first ensure no-reply@cambridge.org is added to your Approved Personal Document E-mail List under your Personal Document Settings on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part of your Kindle email address below. Find out more about sending to your Kindle. Find out more about sending to your Kindle.

Note you can select to send to either the @free.kindle.com or @kindle.com variations. ‘@free.kindle.com’ emails are free but can only be sent to your device when it is connected to wi-fi. ‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.

Find out more about the Kindle Personal Document Service.

Highly crystalline core-shell FeCo-CoFe2O4 nanostructures
Available formats
×

Send article to Dropbox

To send this article to your Dropbox account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your <service> account. Find out more about sending content to Dropbox.

Highly crystalline core-shell FeCo-CoFe2O4 nanostructures
Available formats
×

Send article to Google Drive

To send this article to your Google Drive account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your <service> account. Find out more about sending content to Google Drive.

Highly crystalline core-shell FeCo-CoFe2O4 nanostructures
Available formats
×
×

Reply to: Submit a response

Please enter your response.

Your details

Please enter a valid email address.

Conflicting interests

Do you have any conflicting interests? *