4.6 Article

Exchange-Bias-like Behavior from Disordered Surface Spins in Li4Mn5O12 Nanosticks

Journal

JOURNAL OF PHYSICAL CHEMISTRY C
Volume 114, Issue 39, Pages 16143-16147

Publisher

AMER CHEMICAL SOC
DOI: 10.1021/jp101746f

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Funding

  1. Foundation of National Laboratory of Solid State Microstructures, Nanjing University [2010ZZ18]
  2. National High Technology Research and Development Program of China [2007AA021805]
  3. National Key Project for Basic Research, People's Republic of China [2010CB923402, 2005CB623605]

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Single-crystalline Li4Mn5O12 nanosticks were prepared by a simple method of adding MnSO4 to molten LiNO3 and NaNO3. FESEM and HRTEM investigations revealed that two-dimensional Li4Mn5O12 nanosticks were generated in large quantity. The results of dc and ac magnetization as well as magnetic hysteresis measurements suggest spin-glass-like behavior at 9.8 K. Furthermore, an exchange-bias effect is observed over the material in applied magnetic field of H <= 5 T.

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