Experimental evidence for simultaneous relaxation processes in super spin glass gamma-Fe2O3 nanoparticle system
Autori
Nikolić, Violeta N.Perović, Marija M.
Kusigerski, Vladan
Bošković, Marko
Mraković, Ana Đ.
Blanuša, Jovan
Spasojević, Vojislav
Članak u časopisu (Objavljena verzija)
Metapodaci
Prikaz svih podataka o dokumentuApstrakt
Spherical gamma-Fe2O3 nanoparticles with the narrow size distribution of (5 +/- 1) nm were synthesized by the method of thermal decomposition from iron acetyl acetonate precursor. The existence of super spin-glass state at low temperatures and in low applied magnetic fields was confirmed by DC magnetization measurements on a SQUID magnetometer. The comprehensive investigation of magnetic relaxation dynamics in low-temperature region was conducted through the measurements of single-stop and multiple stop ZFC memory effects, ZFC magnetization relaxation, and AC susceptibility measurements. The experimental findings revealed the peculiar change of magnetic relaxation dynamics at T approximate to 10 K, which arose as a consequence of simultaneous existence of different relaxation processes in Fe2O3 nanoparticle system. Complementarity of the applied measurements was utilized in order to single out distinct relaxation processes as well as to elucidate complex relaxation mechanisms in the in...vestigated interacting nanoparticle system.
Ključne reči:
Maghemite nanoparticles / Thermal decomposition of organic precursor / Magnetic relaxation / Super spin glassIzvor:
Journal of Nanoparticle Research, 2015, 17, 3Finansiranje / projekti:
- Magnetni i radionuklidima obeleženi nanostrukturni materijali za primene u medicini (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-45015)
DOI: 10.1007/s11051-015-2952-2
ISSN: 1388-0764; 1572-896X
WoS: 000355017100005
Scopus: 2-s2.0-84924943572
Kolekcije
Institucija/grupa
VinčaTY - JOUR AU - Nikolić, Violeta N. AU - Perović, Marija M. AU - Kusigerski, Vladan AU - Bošković, Marko AU - Mraković, Ana Đ. AU - Blanuša, Jovan AU - Spasojević, Vojislav PY - 2015 UR - https://vinar.vin.bg.ac.rs/handle/123456789/561 AB - Spherical gamma-Fe2O3 nanoparticles with the narrow size distribution of (5 +/- 1) nm were synthesized by the method of thermal decomposition from iron acetyl acetonate precursor. The existence of super spin-glass state at low temperatures and in low applied magnetic fields was confirmed by DC magnetization measurements on a SQUID magnetometer. The comprehensive investigation of magnetic relaxation dynamics in low-temperature region was conducted through the measurements of single-stop and multiple stop ZFC memory effects, ZFC magnetization relaxation, and AC susceptibility measurements. The experimental findings revealed the peculiar change of magnetic relaxation dynamics at T approximate to 10 K, which arose as a consequence of simultaneous existence of different relaxation processes in Fe2O3 nanoparticle system. Complementarity of the applied measurements was utilized in order to single out distinct relaxation processes as well as to elucidate complex relaxation mechanisms in the investigated interacting nanoparticle system. T2 - Journal of Nanoparticle Research T1 - Experimental evidence for simultaneous relaxation processes in super spin glass gamma-Fe2O3 nanoparticle system VL - 17 IS - 3 DO - 10.1007/s11051-015-2952-2 ER -
@article{ author = "Nikolić, Violeta N. and Perović, Marija M. and Kusigerski, Vladan and Bošković, Marko and Mraković, Ana Đ. and Blanuša, Jovan and Spasojević, Vojislav", year = "2015", abstract = "Spherical gamma-Fe2O3 nanoparticles with the narrow size distribution of (5 +/- 1) nm were synthesized by the method of thermal decomposition from iron acetyl acetonate precursor. The existence of super spin-glass state at low temperatures and in low applied magnetic fields was confirmed by DC magnetization measurements on a SQUID magnetometer. The comprehensive investigation of magnetic relaxation dynamics in low-temperature region was conducted through the measurements of single-stop and multiple stop ZFC memory effects, ZFC magnetization relaxation, and AC susceptibility measurements. The experimental findings revealed the peculiar change of magnetic relaxation dynamics at T approximate to 10 K, which arose as a consequence of simultaneous existence of different relaxation processes in Fe2O3 nanoparticle system. Complementarity of the applied measurements was utilized in order to single out distinct relaxation processes as well as to elucidate complex relaxation mechanisms in the investigated interacting nanoparticle system.", journal = "Journal of Nanoparticle Research", title = "Experimental evidence for simultaneous relaxation processes in super spin glass gamma-Fe2O3 nanoparticle system", volume = "17", number = "3", doi = "10.1007/s11051-015-2952-2" }
Nikolić, V. N., Perović, M. M., Kusigerski, V., Bošković, M., Mraković, A. Đ., Blanuša, J.,& Spasojević, V.. (2015). Experimental evidence for simultaneous relaxation processes in super spin glass gamma-Fe2O3 nanoparticle system. in Journal of Nanoparticle Research, 17(3). https://doi.org/10.1007/s11051-015-2952-2
Nikolić VN, Perović MM, Kusigerski V, Bošković M, Mraković AĐ, Blanuša J, Spasojević V. Experimental evidence for simultaneous relaxation processes in super spin glass gamma-Fe2O3 nanoparticle system. in Journal of Nanoparticle Research. 2015;17(3). doi:10.1007/s11051-015-2952-2 .
Nikolić, Violeta N., Perović, Marija M., Kusigerski, Vladan, Bošković, Marko, Mraković, Ana Đ., Blanuša, Jovan, Spasojević, Vojislav, "Experimental evidence for simultaneous relaxation processes in super spin glass gamma-Fe2O3 nanoparticle system" in Journal of Nanoparticle Research, 17, no. 3 (2015), https://doi.org/10.1007/s11051-015-2952-2 . .