First order transition from antiferromagnetism to ferromagnetism in Ce(Fe0.96Al0.04)2
نویسندگان
چکیده
Taking the pseudobinary C15 Laves phase compound Ce(Fe0.96Al0.04)2 as a paradigm for studying a ferromagnetic to antiferromagnetic phase transition, we present interesting thermomagnetic history effects in magnetotransport as well as magnetisation measurements across this phase transition. A comparison is made with history effects observed across the ferromagnetic to antiferromagnetic transition in R0.5Sr0.5MnO3 crystals. Typeset using REVTEX
منابع مشابه
First order transition from ferromagnetism to antiferromagnetism in Ce(Fe0.96Al0.04)2: a magnetotransport study
The magnetotransport behaviour is investigated in detail across the first order magnetic phase transition from ferromagnetic to antiferromagnetic state in polycrystalline Ce(Fe0.96Al0.04)2 sample. The study clearly brings out various generic features associated with a first order transition, viz., hysteresis, phase coexistence, supercooling and superheating, presence and limits of the metastabl...
متن کاملمثالی از پیچیدگی در مغناطیس: ساختارهای پیچیده مغناطیسی در میان فلزات نادر خاکی
We present and compare the magnetic structures of limit compounds, between the ferromagnetism and antiferromagnetism in the pseudobinary compounds of type RNi/Pt/Cu, where R = Tb, Gd, Nd or Ce, appearing when we substitute the transition metal. All of them are examples of complex magnetic structures as the result of different magnetic interactions, inhomogeneities and disorder. This overview p...
متن کاملTuneable Magnetic Phase Transitions in Layered CeMn2Ge2-xSix Compounds
The structural and magnetic properties of seven CeMn2Ge(2-x)Six compounds with x = 0.0-2.0 have been investigated in detail. Substitution of Ge with Si leads to a monotonic decrease of both a and c along with concomitant contraction of the unit cell volume and significant modifications of the magnetic states - a crossover from ferromagnetism at room temperature for Ge-rich compounds to antiferr...
متن کاملResistivity and thermoelectric power measurements on CeFe2 and its pseudobinaries
Resistivity and thermoelectric power (TEP) measurements on CeFe2 and two of its pseudo-binaries Ce(Fe, 5% Ir)2 and Ce(Fe, 7% Ru)2 between 78K and 275K are reported. The resistivity data are analysed in terms of contributions from scattering due to phonon, magnon, spin fluctuation and lattice defects, and also from interband scattering. Attempts are made to analyze the TEP data in terms of these...
متن کاملFirst order transition from ferro - to antiferromagnetism in CeFe 2 based pseudobinary alloys
We present results of ac susceptibility measurements highlighting the presence of thermal hysteresis and phase coexistence across the ferro-to antiferromag-netic transition in various CeFe 2 based pseudobinary systems. These results indicate that the ferro-to antiferromagnetic transition in these systems is first order in nature.
متن کامل