Magnetic Relaxation and Memory Effect in Nickel-Chromium Cyanide Nanoparticles

• Authors: A. Zentko , V. Kavečanský , M. Mihalik , S. Maťaš , Z. Mitróová , M. Zentková , M. Maryško , Z. Jagličić
• Languages of publication: EN

Abstracts

EN

The low temperature dynamics of a magnetic nanoparticle system Ni_3[Cr(CN)_6]_2 with an average nanoparticles size of 4 nm was studied. Using different temperature and field protocols memory phenomena were studied by the DC magnetization and magnetic relaxation measurements of the system at temperatures below T_m = 19 K. Aging experiments show an absence of any waiting time dependence in the magnetization relaxation due to a field change after zero field and field cooling. This observation discriminates the dynamics of the system from the behaviour of a classical spin-glass.

Keywords

EN

75.50.Tt; 75.50.Lk

Discipline

• 75.50.Tt: Fine-particle systems; nanocrystalline materials
• 75.50.Lk: Spin glasses and other random magnets

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2008
• Volume: 113
• Issue: 1
• Pages: 511-514

Dates

published

2008-01

received

2007-07-09

Contributors

author

A. Zentko

• Institute of Experimental Physics, Slovak Academy of Sciences, Watsonova 47, 040 01 Košice, Slovak Republic

author

V. Kavečanský

• Institute of Experimental Physics, Slovak Academy of Sciences, Watsonova 47, 040 01 Košice, Slovak Republic

author

M. Mihalik

• Institute of Experimental Physics, Slovak Academy of Sciences, Watsonova 47, 040 01 Košice, Slovak Republic

author

S. Maťaš

• Institute of Experimental Physics, Slovak Academy of Sciences, Watsonova 47, 040 01 Košice, Slovak Republic

author

Z. Mitróová

• Institute of Experimental Physics, Slovak Academy of Sciences, Watsonova 47, 040 01 Košice, Slovak Republic

author

M. Zentková

• Institute of Experimental Physics, Slovak Academy of Sciences, Watsonova 47, 040 01 Košice, Slovak Republic

author

M. Maryško

• Institute of Physics of the AS CR, v.v.i., Na Slovance 2, 182 21 Prague 8, Czech Republic

author

Z. Jagličić

• Institute of Mathematics, Physics and Mechanics, Jadranska 19, 1000 Ljubljana, Slovenia

References

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• 2. M.N. Leuenberger, D. Loos, Nature 410, 789 (2001)
• 3. L. Catala, T. Gacoin, J.-P. Boilot, E. Riviere, C. Paulsen, E. Lhotel, T. Mallah, Adv. Mater. 15, 826 (2003)
• 4. T. Jonsson, J. Mattsson, C. Dujurberg, F.A. Khan, P. Nordblad, P. Svedlindh, Phys. Rev. Lett., 75 (1995)

Identifiers

DOI

10.12693/APhysPolA.113.511