TY  - JOUR
AU  - Concas, Giorgio
AU  - Congiu, Francesco
AU  - Muscas, Giuseppe
AU  - Peddis, Davide
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1674
AB  - We studied the temperature,dependence of the magnetization in an ensemble of monodomain nanoparticles both with dc magnetometry and Mossbauer spectroscopy. The analytical form of the temperature dependence is given by the complementary cumulative distribution function. This allows to determine the magnetization blocking temperatures of the sample by a fitting procedure. It is possible to calculate the Mossbauer blocking temperature by a single spectrum and the dc magnetization blocking temperature by, two points of the thermoremanent magnetization curve, thus with a large reduction of the experimental work. The method may be used for particles with not too strong interactions, such happens in the Fe28 sample and not for samples with strong interactions as N30; it may be used for interparticle interaction energies up to 2 yJ and not for energies larger than 60 yJ. This method of analysis of the data should be used in the future work concerning the thermoremanent magnetization and Mossbauer spectra of magnetic nanoparticles.
T2  - Journal of Physical Chemistry. C
T1  - Determination of Blocking Temperature in Magnetization and Mossbauer Time Scale: A Functional Form Approach
VL  - 121
IS  - 30
SP  - 16541
EP  - 16548
DO  - 10.1021/acs.jpcc.7b01748
ER  - 

@article{
author = "Concas, Giorgio and Congiu, Francesco and Muscas, Giuseppe and Peddis, Davide",
year = "2017",
abstract = "We studied the temperature,dependence of the magnetization in an ensemble of monodomain nanoparticles both with dc magnetometry and Mossbauer spectroscopy. The analytical form of the temperature dependence is given by the complementary cumulative distribution function. This allows to determine the magnetization blocking temperatures of the sample by a fitting procedure. It is possible to calculate the Mossbauer blocking temperature by a single spectrum and the dc magnetization blocking temperature by, two points of the thermoremanent magnetization curve, thus with a large reduction of the experimental work. The method may be used for particles with not too strong interactions, such happens in the Fe28 sample and not for samples with strong interactions as N30; it may be used for interparticle interaction energies up to 2 yJ and not for energies larger than 60 yJ. This method of analysis of the data should be used in the future work concerning the thermoremanent magnetization and Mossbauer spectra of magnetic nanoparticles.",
journal = "Journal of Physical Chemistry. C",
title = "Determination of Blocking Temperature in Magnetization and Mossbauer Time Scale: A Functional Form Approach",
volume = "121",
number = "30",
pages = "16541-16548",
doi = "10.1021/acs.jpcc.7b01748"
}

Concas, G., Congiu, F., Muscas, G.,& Peddis, D.. (2017). Determination of Blocking Temperature in Magnetization and Mossbauer Time Scale: A Functional Form Approach. in Journal of Physical Chemistry. C, 121(30), 16541-16548.
https://doi.org/10.1021/acs.jpcc.7b01748

Concas G, Congiu F, Muscas G, Peddis D. Determination of Blocking Temperature in Magnetization and Mossbauer Time Scale: A Functional Form Approach. in Journal of Physical Chemistry. C. 2017;121(30):16541-16548.
doi:10.1021/acs.jpcc.7b01748 .

Concas, Giorgio, Congiu, Francesco, Muscas, Giuseppe, Peddis, Davide, "Determination of Blocking Temperature in Magnetization and Mossbauer Time Scale: A Functional Form Approach" in Journal of Physical Chemistry. C, 121, no. 30 (2017):16541-16548,
https://doi.org/10.1021/acs.jpcc.7b01748 . .

TY  - JOUR
AU  - Belošević-Čavor, Jelena
AU  - Congiu, Francesco
AU  - Koteski, Vasil J.
AU  - Cekić, Božidar Đ.
AU  - Concas, Giorgio
PY  - 2006
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/6609
AB  - Magnetization M as a function of applied magnetic field H up to 50 kOe was measured at low temperature T = 5K, using an SQUID magnetometer, for HfCo2 and Hf2Co intermetallic compounds. Both samples showed paramagnetic behaviour with a weak ferromagnetic contribution due to impurities (0.01-0.001 wt%). The values of the mass susceptibilities chi were deduced from the measurements. In addition, calculations using full-potential linearized augmented plane wave (FP-LAPW) WIEN 97 programme package were done, in order to check their agreement with the experimental results.
T2  - Materials Science Forum
T1  - Magnetism of the compounds in the Hf-co phase system
VL  - 518
SP  - 319
EP  - 324
DO  - 10.4028/www.scientific.net/MSF.518.319
ER  - 

@article{
author = "Belošević-Čavor, Jelena and Congiu, Francesco and Koteski, Vasil J. and Cekić, Božidar Đ. and Concas, Giorgio",
year = "2006",
abstract = "Magnetization M as a function of applied magnetic field H up to 50 kOe was measured at low temperature T = 5K, using an SQUID magnetometer, for HfCo2 and Hf2Co intermetallic compounds. Both samples showed paramagnetic behaviour with a weak ferromagnetic contribution due to impurities (0.01-0.001 wt%). The values of the mass susceptibilities chi were deduced from the measurements. In addition, calculations using full-potential linearized augmented plane wave (FP-LAPW) WIEN 97 programme package were done, in order to check their agreement with the experimental results.",
journal = "Materials Science Forum",
title = "Magnetism of the compounds in the Hf-co phase system",
volume = "518",
pages = "319-324",
doi = "10.4028/www.scientific.net/MSF.518.319"
}

Belošević-Čavor, J., Congiu, F., Koteski, V. J., Cekić, B. Đ.,& Concas, G.. (2006). Magnetism of the compounds in the Hf-co phase system. in Materials Science Forum, 518, 319-324.
https://doi.org/10.4028/www.scientific.net/MSF.518.319

Belošević-Čavor J, Congiu F, Koteski VJ, Cekić BĐ, Concas G. Magnetism of the compounds in the Hf-co phase system. in Materials Science Forum. 2006;518:319-324.
doi:10.4028/www.scientific.net/MSF.518.319 .

Belošević-Čavor, Jelena, Congiu, Francesco, Koteski, Vasil J., Cekić, Božidar Đ., Concas, Giorgio, "Magnetism of the compounds in the Hf-co phase system" in Materials Science Forum, 518 (2006):319-324,
https://doi.org/10.4028/www.scientific.net/MSF.518.319 . .