Lattice coupled first order magnetoresistance transition in an A-type antiferromagnet: Pr$_{0.46}$Sr$_{0.54}$MnO$_3$

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dc.creatorMahendiran, R.
dc.creatorMartin, C.
dc.creatorMaignan, A.
dc.creatorHervieu, M.
dc.creatorRaveau, B.
dc.creatorMorellon, L.
dc.creatorMarquina, C.
dc.creatorGarcia-Landa, B.
dc.creatorIbarra, M. R.
dc.date2001-07-27
dc.date.accessioned2026-07-07T02:42:17Z
dc.date.available2026-07-07T02:42:17Z
dc.descriptionWe investigated magnetic, magnetotransport and magnetostriction properties of the A-type antiferromagnet Pr$_{0.46}$Sr$_{0.54}$MnO$_3$ which undergoes a first order paramagnetic-antiferromagnetic transition below T$_N$ = 210 K while cooling and T$_N$ = 215 K while warming. The zero field ($μ_0$H = 0 T) resistivity shows a sudden jump at T$_N$ and a small bump around T$_{max}$ = 220 K (\TEXTsymbol{>} T$_N$). T$_N$ shifts down and T$_{max}$ shifts up with increasing $μ_0$H. Magnetoresistance as high as -45-57 % at 7 T is found in the temperature range 180 K-230 K. Isothermal measurements indicate that the field induced antiferromagnetic to ferromagnetic transition below T$_N$ is accompanied by a rapid decrease of the resistivity but increase of volume ($Δ$V/V = +0.25 % at 180 K and 13.7 T). This lattice coupled magnetoresistance transition is suggested due to the field induced structural transition from the low volume orthorhombic to the high volume tetragonal structure.
dc.description10 pages, 5 figures, submitted to Phys. Rev. B
dc.identifierhttps://arxiv.org/abs/cond-mat/0107560
dc.identifierhttp://arxiv.org/abs/cond-mat/0107560
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/18080
dc.subjectMaterials Science
dc.titleLattice coupled first order magnetoresistance transition in an A-type antiferromagnet: Pr$_{0.46}$Sr$_{0.54}$MnO$_3$
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