Geodesic
Spin-glass transition in porous spheres BiFeO$_3$
Nanosistemy: fizika, himiâ, matematika, Tome 11 (2020) no. 5, pp. 565-571.

Voir la notice de l'article provenant de la source Math-Net.Ru

Magnetic properties of porous spheres BiFeO$_{3}$ have been studied at temperatures ranging from $2$ to $300$ K. A transition to cluster spin glass state has been detected in the region of about $100$ K. The presence of the transition is confirmed by nonlinear variation of coercive force and the appearance of exchange displacement of magnetic hysteresis loops at temperature below $100$ K. Temperature dependence of magnetization for zero-field cooled regime exhibit a maximum at some temperature $T_{m}$. The function $T_{m}(H)$ ($H$ is magneic field) changes in accordance with Almeida-Thouless line. The performed measurements of the frequency dependence of AC susceptibility confirm the behavior of spin glass with spin freezing temperature $T_{f} = 116$ K. The critical index $z\nu = 2.5$ agrees well with the mean-field theory $z\nu = 2.0$.
Keywords: bismuth ferrite, magnetic properties, porous spheres, spin cluster glass.
Mots-clés : Almeida-Thouless line 
@article{NANO_2020_11_5_a8,
     author = {A. V. Dmitriev and E. V. Vladimirova and M. A. Semkin and A. V. Korolev},
     title = {Spin-glass transition in porous spheres {BiFeO}$_3$},
     journal = {Nanosistemy: fizika, himi\^a, matematika},
     pages = {565--571},
     publisher = {mathdoc},
     volume = {11},
     number = {5},
     year = {2020},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/NANO_2020_11_5_a8/}
}
TY  - JOUR
AU  - A. V. Dmitriev
AU  - E. V. Vladimirova
AU  - M. A. Semkin
AU  - A. V. Korolev
TI  - Spin-glass transition in porous spheres BiFeO$_3$
JO  - Nanosistemy: fizika, himiâ, matematika
PY  - 2020
SP  - 565
EP  - 571
VL  - 11
IS  - 5
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/NANO_2020_11_5_a8/
LA  - en
ID  - NANO_2020_11_5_a8
ER  - 
%0 Journal Article
%A A. V. Dmitriev
%A E. V. Vladimirova
%A M. A. Semkin
%A A. V. Korolev
%T Spin-glass transition in porous spheres BiFeO$_3$
%J Nanosistemy: fizika, himiâ, matematika
%D 2020
%P 565-571
%V 11
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/NANO_2020_11_5_a8/
%G en
%F NANO_2020_11_5_a8
A. V. Dmitriev; E. V. Vladimirova; M. A. Semkin; A. V. Korolev. Spin-glass transition in porous spheres BiFeO$_3$. Nanosistemy: fizika, himiâ, matematika, Tome 11 (2020) no. 5, pp. 565-571. http://geodesic.mathdoc.fr/item/NANO_2020_11_5_a8/