Observation of spontaneous magnetization jump and field-induced irreversibility in Nd5Ge3

We report the observation of spontaneous and ultra-sharp jumps in the low-temperature magnetization isotherms of polycrystalline Nd5Ge3. Field-induced and ultra-sharp jumps are also seen in resistivity and heat capacity data. These jumps are accompanied by field-induced irreversibility. The consiste...

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Bibliographic Details
Published in:	Europhysics letters Vol. 91; no. 3; p. 37007
Main Authors:	Maji, B, Suresh, K. G, Nigam, A. K
Format:	Journal Article
Language:	English
Published:	IOP Publishing 01-08-2010 EPS, SIF, EDP Sciences and IOP Publishing
Subjects:	75.30.Kz 75.47.Np 75.60.Ej
Online Access:	Get full text
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Summary:	We report the observation of spontaneous and ultra-sharp jumps in the low-temperature magnetization isotherms of polycrystalline Nd5Ge3. Field-induced and ultra-sharp jumps are also seen in resistivity and heat capacity data. These jumps are accompanied by field-induced irreversibility. The consistency seen in these three data clearly shows that the spin, electronic and lattice states are strongly coupled. Time-induced growth of the ferromagnetic phase is observed at a constant field and temperature, implying the metastability of the magnetic phase in the low field region. Various experimental findings point towards a strong field-induced magneto-structural irreversibility in this compound.
Bibliography:	publisher-ID:epl12866 ark:/67375/80W-8H3VNKTG-0 istex:97DC50D4B9FEB93EC263AD87EC80816F49189965
ISSN:	0295-5075 1286-4854
DOI:	10.1209/0295-5075/91/37007