Quantitative Measurements of Size-Dependent Magnetoelectric Coupling in Fe3O4 Nanoparticles

Kyongjun Yoo, Byung Gu Jeon, Sae Hwan Chun, Deepak Rajaram Patil, Yong Jun Lim, Seung Hyun Noh, Jihyo Gil, Jinwoo Cheon, Kee Hoon Kim

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

Bulk magnetite (Fe3O4), the loadstone used in magnetic compasses, has been known to exhibit magnetoelectric (ME) properties below ∼10 K; however, corresponding ME effects in Fe3O4 nanoparticles have been enigmatic. We investigate quantitatively the ME coupling of spherical Fe3O4 nanoparticles with uniform diameters (d) from 3 to 15 nm embedded in an insulating host, using a sensitive ME susceptometer. The intrinsic ME susceptibility (MES) of the Fe3O4 nanoparticles is measured, exhibiting a maximum value of ∼0.6 ps/m at 5 K for d = 15 nm. We found that the MES is reduced with reduced d but remains finite until d = ∼5 nm, which is close to the critical thickness for observing the Verwey transition. Moreover, with reduced diameter the critical temperature below which the MES becomes conspicuous increased systematically from 9.8 K in the bulk to 19.7 K in the nanoparticles with d = 7 nm, reflecting the core-shell effect on the ME properties. These results point to a new pathway for investigating ME effect in various nanomaterials.

Original languageEnglish
Pages (from-to)7408-7413
Number of pages6
JournalNano letters
Volume16
Issue number12
DOIs
Publication statusPublished - 2016 Dec 14

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Nanoparticles
Magnetoelectric effects
nanoparticles
magnetic permeability
magnetic compasses
Ferrosoferric Oxide
Magnetite
Nanostructured materials
magnetite
critical temperature
Temperature

All Science Journal Classification (ASJC) codes

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering

Cite this

Yoo, K., Jeon, B. G., Chun, S. H., Patil, D. R., Lim, Y. J., Noh, S. H., ... Kim, K. H. (2016). Quantitative Measurements of Size-Dependent Magnetoelectric Coupling in Fe3O4 Nanoparticles. Nano letters, 16(12), 7408-7413. https://doi.org/10.1021/acs.nanolett.6b02978
Yoo, Kyongjun ; Jeon, Byung Gu ; Chun, Sae Hwan ; Patil, Deepak Rajaram ; Lim, Yong Jun ; Noh, Seung Hyun ; Gil, Jihyo ; Cheon, Jinwoo ; Kim, Kee Hoon. / Quantitative Measurements of Size-Dependent Magnetoelectric Coupling in Fe3O4 Nanoparticles. In: Nano letters. 2016 ; Vol. 16, No. 12. pp. 7408-7413.
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Yoo, K, Jeon, BG, Chun, SH, Patil, DR, Lim, YJ, Noh, SH, Gil, J, Cheon, J & Kim, KH 2016, 'Quantitative Measurements of Size-Dependent Magnetoelectric Coupling in Fe3O4 Nanoparticles', Nano letters, vol. 16, no. 12, pp. 7408-7413. https://doi.org/10.1021/acs.nanolett.6b02978

Quantitative Measurements of Size-Dependent Magnetoelectric Coupling in Fe3O4 Nanoparticles. / Yoo, Kyongjun; Jeon, Byung Gu; Chun, Sae Hwan; Patil, Deepak Rajaram; Lim, Yong Jun; Noh, Seung Hyun; Gil, Jihyo; Cheon, Jinwoo; Kim, Kee Hoon.

In: Nano letters, Vol. 16, No. 12, 14.12.2016, p. 7408-7413.

Research output: Contribution to journalArticle

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AU - Lim, Yong Jun

AU - Noh, Seung Hyun

AU - Gil, Jihyo

AU - Cheon, Jinwoo

AU - Kim, Kee Hoon

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