Magnetic and dielectric properties of quasi-two-dimensional manganese oxide Sr7Mn4O15
Source abstract
Abstract
Abstract Using dc magnetic susceptibility, electron spin resonance (ESR) and dielectric spectroscopy techniques, we investigate the magnetic and dielectric properties of Sr 7 Mn 4 O 15 , which has a layered structure with pairs of face-sharing octahedra Mn 2 O 9 . Magnetic susceptibility reveals the Neel temperature T N ∼70.5 K, above which Sr 7 Mn 4 O 15 manifests intense short range order. ESR spectra indicate the existence of a transition at about 370 K, confirming the suggested spin pairing in the Mn 2 O 9 units. In the dielectric spectra, a sudden drop of permittivity is observed at T N , revealing the existence of strong spin–lattice coupling in Sr 7 Mn 4 O 15 .
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Research context
OpenAlex topics: Multiferroics and related materials · Magnetic and transport properties of perovskites and related materials · Advanced Condensed Matter Physics
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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