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Synthesis, structure and magnetic properties ofβ-MnO 2 nanorods


We present synthesis, structure and magnetic properties of structurally well-ordered single-crystalline β-MnO2nanorods of 50–100 nm diameter and several µm length. Thorough structural characterization shows that the basic β-MnO2material is covered by a thin surface layer (2.5 nm) of α-Mn2O3phase with a reduced Mn valence that adds its own magnetic signal to the total magnetization of the β-MnO2nanorods. The relatively complicated temperature-dependent magnetism of the nanorods can be explained in terms of a superposition of bulk magnetic properties of spatially segregated β-MnO2and α-Mn2O3constituent phases and the soft ferromagnetism of the thin interface layer between these two phases.



  1. Dekker C: Phys. Today. 1999, 52: 22. COI number [1:CAS:528:DyaK1MXjsVGntL4%3D]

    Article  Google Scholar 

  2. Duan X, Huang Y, Cui Y, Wang J, Lieber CM: Nature. 2001, 409: 66. COI number [1:CAS:528:DC%2BD3MXkt1WqsA%3D%3D], 10.1038/35051047

    Article  Google Scholar 

  3. Xia Y, Yang P, Sun Y, Wu Y, Mayers B, Gates B, Yin Y, Kim F, Yan H: Adv. Mater.. 2003, 15: 353. COI number [1:CAS:528:DC%2BD3sXisFemtro%3D], 10.1002/adma.200390087

    Article  Google Scholar 

  4. Rao CNR, Deepak FL, Gundiah G, Govindaraj A: Prog. Solid Chem.. 2003, 31: 5. COI number [1:CAS:528:DC%2BD3sXptFOkur0%3D], 10.1016/j.progsolidstchem.2003.08.001

    Article  Google Scholar 

  5. Thackeray MM: Prog. Solid State Chem.. 1997, 25: 1. COI number [1:CAS:528:DyaK2sXotVGgur8%3D], 10.1016/S0079-6786(97)81003-5

    Article  Google Scholar 

  6. Chen X, Li X, Jiang Y, Shi C, Li X: Solid State Commun.. 2005, 136: 94. COI number [1:CAS:528:DC%2BD2MXhtVGgurvO], 10.1016/j.ssc.2005.08.019

    Article  Google Scholar 

  7. Wang X, Li Y: J. Am. Chem. Soc.. 2002, 124: 2880. COI number [1:CAS:528:DC%2BD38XhsF2qs70%3D], 10.1021/ja0177105

    Article  Google Scholar 

  8. Na CW, Han DS, Kim DS, Park J, Jeon YT, Lee G, Jung M-H: Appl. Phys. Lett.. 2005, 87: 142504. COI number [1:CAS:528:DC%2BD2MXhtFGqu7nM], 10.1063/1.2061849

    Article  Google Scholar 

  9. Liu W, Farrington GC, Chaput F, Dunn B: J. Electrochem. Soc.. 1996, 143: 879 . COI number [1:CAS:528:DyaK28XitFGgtLk%3D], 10.1149/1.1836552

    Article  Google Scholar 

  10. Matzapetakis M, Karligiano N, Bino A, Dakanali M, Raptopoulou CP, Tangoulis V, Terzis A, Giapintzakis J, Salifoglou A: Inorg. Chem.. 2000, 39: 4044. COI number [1:CAS:528:DC%2BD3cXlsV2itbw%3D], 10.1021/ic9912631

    Article  Google Scholar 

  11. Regulski M, Przeniosło R, Sosnowska I, Hoffmann J-U: J. Phys. Soc. Japan. 2004, 73: 3444. COI number [1:CAS:528:DC%2BD2MXhtlejtb4%3D], 10.1143/JPSJ.73.3444

    Article  Google Scholar 

  12. Ohama N, Hamaguchi Y: J. Phys. Soc. Japan. 1971, 30: 1311. COI number [1:CAS:528:DyaE3MXksVagur8%3D], 10.1143/JPSJ.30.1311

    Article  Google Scholar 

  13. Regulski M, Przeniosło R, Sosnowska I, Hohlwein D, Schneider R: J. Alloys Compd.. 2004, 362: 236. COI number [1:CAS:528:DC%2BD3sXpt1Gms7Y%3D], 10.1016/S0925-8388(03)00591-7

    Article  Google Scholar 

  14. King EG: J. Am. Chem. Soc.. 1954, 76: 3289. COI number [1:CAS:528:DyaG2cXmslaisA%3D%3D], 10.1021/ja01641a063

    Article  Google Scholar 

  15. Grant RW, Geller S, Cape JA, Espinoza GP: Phys. Rev.. 1968, 175: 686. COI number [1:CAS:528:DyaF1MXhsFCjsA%3D%3D], 10.1103/PhysRev.175.686

    Article  Google Scholar 

  16. Kim SH, Choi BJ, Lee GH, Oh SJ, Kim B, Choi HC, Park J, Chang Y: J. Korean Phys. Soc.. 2005, 46: 941. COI number [1:CAS:528:DC%2BD2MXksVyks7w%3D]

    Google Scholar 

  17. Boucher B, Buhl R, Perrin M: J. Appl. Phys.. 1971, 42: 1615. COI number [1:CAS:528:DyaE3MXhsVyhtrw%3D], 10.1063/1.1660364

    Article  Google Scholar 

  18. Seo WS, Jo HH, Lee K, Kim B, Oh SJ, Park JT: Angew. Chem.. 2004, 43: 1115. COI number [1:CAS:528:DC%2BD2cXmt12rs7k%3D], 10.1002/anie.200352400

    Article  Google Scholar 

  19. Jacobs I S: Chem. Solids. 1959, 11: 1. COI number [1:CAS:528:DyaF3cXjt1Wgsg%3D%3D], 10.1016/0022-3697(59)90033-2

    Article  Google Scholar 

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This work was supported by the Frontier Research Laboratory Program at the Korea Basic Science Institute.

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Correspondence to J. Dolinšek.

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Kim, H., Lee, J., Kim, YM. et al. Synthesis, structure and magnetic properties ofβ-MnO 2 nanorods. Nanoscale Res Lett 2, 81 (2007).

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  • Self-assembled nanorods
  • Manganese oxides
  • Nanoscale magnetism