publication . Other literature type . Article . Preprint . 2010

Realization of giant magnetoelectricity in helimagnets.

Chun, Sae Hwan; Chai, Yi Sheng; Oh, Yoon Seok; Jaiswal-Nagar, Deepshikha; Haam, So Young; Kim, Ingyu; Lee, Bumsung; Nam, Dong Hak; Ko, Kyung-Tae; Park, Jae-Hoon; ...
  • Published: 21 Jan 2010
  • Publisher: American Physical Society (APS)
Abstract
We show that low field magnetoelectric (ME) properties of helimagnets Ba 0.5 Sr 1.5 Zn 2 (Fe 1-x Al x ) 12 O 22 can be efficiently tailored by the Al-substitution level. As x increases, the critical magnetic field for switching electric polarization is systematically reduced from ∼1 T down to ∼1 mT, and the ME susceptibility is greatly enhanced to reach a giant value of 2.0 × 10 4 ps/m at an optimum x = 0.08. We find that control of the nontrivial orbital moment in the octahedral Fe sites through the Al substitution is crucial for fine-tuning the magnetic anisotropy and obtaining the conspicuously improved ME characteristics.
Subjects
free text keywords: General Physics and Astronomy, Octahedron, Physics, Magnetic anisotropy, Polarization density, Condensed matter physics, Critical magnetic field, Condensed Matter - Materials Science, Condensed Matter - Strongly Correlated Electrons
Related Organizations
24 references, page 1 of 2

[1] T. Kimura et al., Nature (London) 426, 55 (2003).

[2] N. Hur et al., Nature (London) 429, 392 (2004).

[3] S.-W. Cheong and M. Mostovoy, Nature Mater. 6, 13 (2007).

[4] R. Ramesh and N. A. Spaldin, Nature Mater. 6, 21 (2007).

[5] C.-W. Nan et al., J. Appl. Phys. 103, 031101 (2008).

[6] H. Katsura, N. Nagaosa, and A. V. Balatsky, Phys. Rev. Lett. 95, 057205 (2005). [OpenAIRE]

[7] M. Mostovoy, Phys. Rev. Lett. 96, 067601 (2006).

[8] I. A. Sergienko and E. Dagotto, Phys. Rev. B 73, 094434 (2006).

[9] M. Kenzelmann et al., Phys. Rev. Lett. 95, 087206 (2005).

[10] L. C. Chapon et al., Phys. Rev. Lett. 93, 177402 (2004).

[11] T. Kimura et al., Nature Mater. 7, 291 (2008).

[12] T. Kimura, G. Lawes, and A. P. Ramirez, Phys. Rev. Lett. 94, 137201 (2005).

[13] W. Eerensiein et al., Nature Mater. 6, 348 (2007).

[14] S. Dong, J. Zhai, J. Li, and D. Viehland, Appl. Phys. Lett. 89, 252904 (2006).

[15] S. Ishiwata et al., Science 319, 1643 (2008).

24 references, page 1 of 2
Abstract
We show that low field magnetoelectric (ME) properties of helimagnets Ba 0.5 Sr 1.5 Zn 2 (Fe 1-x Al x ) 12 O 22 can be efficiently tailored by the Al-substitution level. As x increases, the critical magnetic field for switching electric polarization is systematically reduced from ∼1 T down to ∼1 mT, and the ME susceptibility is greatly enhanced to reach a giant value of 2.0 × 10 4 ps/m at an optimum x = 0.08. We find that control of the nontrivial orbital moment in the octahedral Fe sites through the Al substitution is crucial for fine-tuning the magnetic anisotropy and obtaining the conspicuously improved ME characteristics.
Subjects
free text keywords: General Physics and Astronomy, Octahedron, Physics, Magnetic anisotropy, Polarization density, Condensed matter physics, Critical magnetic field, Condensed Matter - Materials Science, Condensed Matter - Strongly Correlated Electrons
Related Organizations
24 references, page 1 of 2

[1] T. Kimura et al., Nature (London) 426, 55 (2003).

[2] N. Hur et al., Nature (London) 429, 392 (2004).

[3] S.-W. Cheong and M. Mostovoy, Nature Mater. 6, 13 (2007).

[4] R. Ramesh and N. A. Spaldin, Nature Mater. 6, 21 (2007).

[5] C.-W. Nan et al., J. Appl. Phys. 103, 031101 (2008).

[6] H. Katsura, N. Nagaosa, and A. V. Balatsky, Phys. Rev. Lett. 95, 057205 (2005). [OpenAIRE]

[7] M. Mostovoy, Phys. Rev. Lett. 96, 067601 (2006).

[8] I. A. Sergienko and E. Dagotto, Phys. Rev. B 73, 094434 (2006).

[9] M. Kenzelmann et al., Phys. Rev. Lett. 95, 087206 (2005).

[10] L. C. Chapon et al., Phys. Rev. Lett. 93, 177402 (2004).

[11] T. Kimura et al., Nature Mater. 7, 291 (2008).

[12] T. Kimura, G. Lawes, and A. P. Ramirez, Phys. Rev. Lett. 94, 137201 (2005).

[13] W. Eerensiein et al., Nature Mater. 6, 348 (2007).

[14] S. Dong, J. Zhai, J. Li, and D. Viehland, Appl. Phys. Lett. 89, 252904 (2006).

[15] S. Ishiwata et al., Science 319, 1643 (2008).

24 references, page 1 of 2
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publication . Other literature type . Article . Preprint . 2010

Realization of giant magnetoelectricity in helimagnets.

Chun, Sae Hwan; Chai, Yi Sheng; Oh, Yoon Seok; Jaiswal-Nagar, Deepshikha; Haam, So Young; Kim, Ingyu; Lee, Bumsung; Nam, Dong Hak; Ko, Kyung-Tae; Park, Jae-Hoon; ...