Volume 84, Number 3, November 2008
Article Number 37008
Number of page(s) 6
Section Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties
Published online 28 October 2008
EPL, 84 (2008) 37008
DOI: 10.1209/0295-5075/84/37008

A re-entrant canted antiferromagnetic state in the Mn site substituted manganite La0.46Sr0.54Mn0.98Cr0.02O3

Sunil Nair1 and A. K. Nigam2

1   Max Planck Institute for Chemical Physics of Solids - Noethnitzer Str. 40, 01187 Dresden, Germany, EU
2   Department of Condensed Matter Physics and Materials Science, Tata Institute of Fundamental Research Homi Bhabha Road, Mumbai 400 005, India

received 20 June 2008; accepted in final form 23 September 2008; published November 2008
published online 28 October 2008

We report an investigation of the higher-order magnetic susceptibilities, measured across a low-temperature metastable magnetic phase transition in La0.46Sr0.54Mn0.98Cr0.02O3. Measurements of the second- and third-order magnetic susceptibilities clearly indicate that this re-entrant transition is associated with the emergence of a finite spontaneous magnetisation as in a canted antiferromagnet. The large relaxation time scales seen in this system probably originate from self-generated clusters which arise as a consequence of Cr substitution in the host antiferromagnetic lattice.

75.47.Lx - Manganites.
75.50.Lk - Spin glasses and other random magnets.
75.30.Kz - Magnetic phase boundaries (including magnetic transitions, metamagnetism, etc.).

© EPLA 2008