Answers are grounded in this paper and cite their sources.
Polymer-embedded La 2/3 Sr 1/3 MnO 3 (LSMO) composites, (LSMO) 1 −x (PPP) x (PPP is polyparaphenylene, and x is the weight fraction of PPP), were prepared by mixing pre-prepared LSMO and PPP powders. Thermogravimetric analysis, x-ray diffraction, and infrared spectra show that the composites are stable when calcined at 400 o C. Significant enhancement in the magnetoresistance (MR) effect over a wide temperature range is observed for the composites compared with the parent LSMO. The MR enhancement reaches its maximum at x = 0.2. The magnetotransport is mainly attributed to intergrain spin-polarized tunnelling. We argue that the introduction of PPP gives rise to magnetic disorder and hence an enhanced tunnelling effect, which is responsible for the MR enhancement.
No takes yet. Share an insight, caveat, or question.
Yan et al. (2002) studied this question.
Synapse has enriched 5 related papers. Consider them for comparative context: