Τίτλος:
Magnetic properties of the antiferromagnetic site-disordered vanadate Zn2FeV3O11
Γλώσσες Τεκμηρίου:
Αγγλικά
Περίληψη:
The magnetic properties of the Zr2FeV3O11 vanadate, characterized by a disordered distribution of diamagnetic Zn 2+ and high-spin Fe3+ ions, are studied using magnetization and electron paramagnetic resonance (EPR) measurements. The dc susceptibility reveals antiferromagnetic interactions between Fe3 +spins with a Curie-Weiss temperature Θ = -58(1) K, followed by a transition to a frozen, spin-glass-like state at low temperature T f ≈ 2.55 K, indicating an inhomogeneous magnetic ground state. The temperature variation of the EPR parameters confirms the antiferromagnetic coupling of Fe3+ spins at high temperatures, while a distinct divergence is observed at T ≈ 55 K. This behavior is attributed to the inherent magnetic inhomogeneity of the system due to antiferromagnetic spin clusters.
Συγγραφείς:
Likodimos, V.
Guskos, N.
Glenis, S.
Szymczak, R.
Bezkrovnyi, A.
Wabia, M.
Typek, J.
Gasiorek, G.
Kurzawa, M.
Rychlowska-Himmel, I.
Blonska-Tabero, A.
Περιοδικό:
The European Physical Journal B - Condensed Matter
Λέξεις-κλειδιά:
Antiferromagnetism; High temperature effects; Magnets; Paramagnetic resonance; Parameter estimation; Spin glass, Curie-Weiss temperature; Random magnets; Spin clusters; Temperature variation, Zinc compounds
DOI:
10.1140/epjb/e2004-00093-1
