BibTex format
@article{Ghosh:2025:10.1016/j.jallcom.2025.182719,
author = {Ghosh, S and Saha, S and Ahmed, A and Magar, A and Panda, M and Roy, R and Mondal, R and Nath, R and Das, I and Paramanik, T},
doi = {10.1016/j.jallcom.2025.182719},
journal = {Journal of Alloys and Compounds},
title = {Role of Fe–Mn interaction in developing cluster glass behaviour and Griffiths phase in ferrimagnetic Gd(Fe0.75Mn0.25)2Si2},
url = {http://dx.doi.org/10.1016/j.jallcom.2025.182719},
volume = {1039},
year = {2025}
}
RIS format (EndNote, RefMan)
TY - JOUR
AB - In this work, a comprehensive study on the change in magnetic properties with the doping concentration of Mn at the Fe site of the GdFe<inf>2</inf>Si<inf>2</inf> compound has been presented. The parent compound GdFe<inf>2</inf>Si<inf>2</inf> shows an antiferromagnetic (AFM) transition at ∼8.8 K with a significant magnetic moment in the ground state. However, magnetic interaction in the ground state becomes weak when Mn is doped in place of Fe, and the transition temperature shifts towards the lower side. Interestingly, Gd(Fe<inf>0.75</inf>Mn<inf>0.25</inf>)<inf>2</inf>Si<inf>2</inf> compound shows ferrimagnetic (FiM) transition at T<inf>N1</inf> ∼ 6.2 K and cluster-glass behaviour at T<inf>N2</inf> ∼ 25 K. Magnetization, magnetoresistance measurements have been employed to substantiate the FiM behaviour below T<inf>N1</inf> and ac susceptibility results confirm the cluster glass behaviour of this compound at T<inf>N1</inf> < T <T<inf>N2</inf>. Interestingly, above T<inf>N2</inf>, the state is not pure paramagnetic, but a short-range ferromagnetic interaction within Griffiths phase (GP) is observed, and the interaction persists up to the Griffiths transition temperature, T<inf>G</inf> ∼ 110 K in this compound. Extensive magnetic and transport data analysis along with the theoretical model fitting have been employed in order to confirm the short-range FM interaction as GP. Eventually, how magnetic site disorder and frustration from the spin canting of Mn atoms when doped at the Fe sites assist in developing GP in the system that has been discussed elaborately.
AU - Ghosh,S
AU - Saha,S
AU - Ahmed,A
AU - Magar,A
AU - Panda,M
AU - Roy,R
AU - Mondal,R
AU - Nath,R
AU - Das,I
AU - Paramanik,T
DO - 10.1016/j.jallcom.2025.182719
PY - 2025///
SN - 0925-8388
TI - Role of Fe–Mn interaction in developing cluster glass behaviour and Griffiths phase in ferrimagnetic Gd(Fe0.75Mn0.25)2Si2
T2 - Journal of Alloys and Compounds
UR - http://dx.doi.org/10.1016/j.jallcom.2025.182719
VL - 1039
ER -