The magnetic phase of the perovskite CaCrO$_3$ studied with $μ^{+}$SR

Details The magnetic phase of the perovskite CaCrO$_3$ studied with $μ^{+}$SR The magnetic phase of the perovskite CaCrO$_3$ studied with $μ^{+}$SR

2010-04-28

arxiv.org/abs/1004.4932v1

Physics

Condensed Matter

Strongly Correlated Electrons

5 pages, 4 figures. Accepted for publication in PRB

Scientific paper

We investigated the magnetic phase of the perovskite CaCrO$_3$ by using the muon spin relaxation technique accompanied by susceptibility measurements. A thermal hysteresis loop is identified with a width of about 1 K at the transition temperature. Within the time scale of the muon lifetime, a static antiferromagnetic order is revealed with distinct multiple internal fields which are experienced in the muon interstitial sites below the phase-transition temperature, $T_N=90 K$. Above $T_N$, lattice deformations are indicated by transverse-field muon-spin rotation and relaxation suggesting a magneto-elastic mechanism.

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