J. Phys. Soc. Jpn. 80, 023711 (2011) [4 Pages]
LETTERS
Orbital Ordering of Intermediate-Spin State of Co3+ in Sr3YCo4O10.5
Takuro Katsufuji
JPSJ News Comments 8, 02 (2011).
- Full text:
- PDF (eReader) / PDF (Download) (1122 kB)
Received September 9, 2010; Accepted December 15, 2010; Published February 10, 2011
The orbital ordering and spin state in the room-temperature ferromagnet Sr 3 YCo 4 O 10.5 were investigated by a resonant X-ray scattering technique. A resonating signal with a σ→π' scattering component was observed at ( h 00), where h =2 n +1 ( n : integer), near the 1 s → e g transition energy of Co. This provides direct evidence of not only e g orbital ordering but also the existence of the intermediate-spin (IS) state. Moreover, we suggest that the ferrimagnetism is induced by the e g orbital ordering of the IS state of Co 3+ . The peculiar e g orbital, spin-state, and magnetic orderings are also discussed.
©2011 The Physical Society of Japan
KEYWORDS: orbital ordering, spin-state ordering, resonant X-ray scattering, Co3+intermediate spin-state
References
- 1 K.Asai, O.Yokokura, N.Nishimori, H.Chou, J. M.Tranquada, G.Shirane, S.Higuchi, Y.Okajima, and K.Kohn:Phys. Rev. B 50 (1994) 3025. Crossref, Google Scholar
- 2 T.Saitoh, T.Mizokawa, A.Fujimori, M.Abbate, Y.Takeda, and M.Takano:Phys. Rev. B 55 (1997) 4257. Crossref, Google Scholar
- 3 G.Maris, Y.Ren, V.Volotchaev, C.Zobel, T.Lorenz, and T. T. M.Palstra:Phys. Rev. B 67 (2003) 224423. Crossref, Google Scholar
- 4 M.Itoh, M.Sugihara, I.Natori, and K.Motoyama:J. Phys. Soc. Jpn. 64 (1995) 3967. Link, Google Scholar
- 5 S.Noguchi, S.Kawamata, K.Okuda, H.Nogiri, and M.Motokawa:Phys. Rev. B 66 (2002) 094404. Crossref, Google Scholar
- 6 M. W.Haverkort, Z.Hu, J. C.Cezar, T.Burnus, H.Hartmann, M.Reuther, C.Zobel, T.Lorenz, A.Tanaka, N. B.Brookes, H. H.Hsieh, H.-J.Lin, C. T.Chen, and L. H.Tjeng:Phys. Rev. Lett. 97 (2006) 176405. Crossref, Google Scholar
- 7 M.James, M.Avdeev, P.Barnes, L.Morales, K.Wallwork, and R.Withers: J. Solid State Chem. 180 (2007) 2233. Crossref, Google Scholar
- 8 N. O.Golosova, D. P.Kozlenko, L. S.Dubrovinsky, O. A.Drozhzhin, S. Y.Istomin, and B. N.Savenko:Phys. Rev. B 79 (2009) 104431. Crossref, Google Scholar
- 9 D. V.Sheptyakov, V. Y.Pomjakushin, O. A.Drozhzhiun, S. Y.Istomin, E. V.Antipov, I. A.Bobrikov, and A. M.Balagurov:Phys. Rev. B 80 (2009) 024409. Crossref, Google Scholar
- 10 W.Kobayashi, S.Ishiwata, I.Terasaki, M.Takano, I.Grigoraviciute, H.Yamaguchi, and M.Karppinen:Phys. Rev. B 72 (2005) 104408. Crossref, Google Scholar
- 11 W.Kobayashi, S.Yoshida, and I.Terasaki:J. Phys. Soc. Jpn. 75 (2006) 103702. Link, Google Scholar
- 12 W.Kobayashi and I.Terasaki: AIP Conf. Proc. 850 (2006) 1223. Crossref, Google Scholar
- 13 S.Ishiwata, W.Kobayashi, I.Terasaki, K.Kato, and M.Takata:Phys. Rev. B 75 (2007) 220406. Crossref, Google Scholar
- 14 I.Terasaki: private communication. It was also discussed in ref. [13]. Google Scholar
- 15 Y.Murakami, J. P.Hill, D.Gibbs, M.Blume, I.Koyama, M.Tanaka, H.Kawata, T.Arima, Y.Tokura, K.Hirota, and Y.Endoh:Phys. Rev. Lett. 81 (1998) 582. Crossref, Google Scholar
- 16 M.Noguchi, A.Nakazawa, S.Oka, T.Arima, Y.Wakabayashi, H.Nakao, and Y.Murakami:Phys. Rev. B 62 (2000) R9271. Crossref, Google Scholar
- 17 H.Nakao, Y.Wakabayashi, T.Kiyama, Y.Murakami, M. V.Zimmermann, J. P.Hill, D.Gibbs, S.Ishihara, Y.Taguchi, and Y.Tokura:Phys. Rev. B 66 (2002) 184419. Crossref, Google Scholar
- 18 H.Nakao, K.Magishi, Y.Wakabayashi, Y.Murakami, K.Koyama, K.Hirota, Y.Endoh, and S.Kunii:J. Phys. Soc. Jpn. 70 (2001) 1857. Link, Google Scholar
- 19 Y.Murakami: private communication. Google Scholar
- 20 M.Medarde, C.Dallera, M.Grioni, J.Voigt, A. P. E.Pomjakushina, K.Conder, T.Neisius, O.Tjernberg, and S. N.Barilo:Phys. Rev. B 73 (2006) 054424. Crossref, Google Scholar
- 21 I. S.Elfimov, V. I.Anisimov, and G. A.Sawatzky:Phys. Rev. Lett. 82 (1999) 4264. Crossref, Google Scholar
- 22 S.Ishihara, J.Inoue, and S.Maekawa:Phys. Rev. B 55 (1997) 8280. Crossref, Google Scholar