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The rare-earth manganites R1−xAxMnO3 have stimulated considerable scientific and technological interest in recent years due to their exotic electronic and magnetic properties [1]The fascinating physics of these materials is driven by a close coupling between charge, spin, lattice and orbital degree of freedom, which has commonly resulted in phase separation between charge/orbital order (COO) and ferromagnetic...
The development of new permanent magnet materials is of particularly importance since the high-performance Nd2Fe14B are expensive due to the limited reserves of rare earth Nd, Tb, Dy on the earth. In the past several years, much attention has been attracted to the permanent magnet without rare earth[1], such as Zr2Co11, HfCo7 and Mn-based alloys, and excellent performance has been observed. For example,...
The (La1−yPry)1−xCaxMnO3 systems has been extensively studied in recent years as a typical electronic phase separation(PS) system. [1-4] As well known, the average radius of A sites in the ABO3 structure plays a key role in determining the band (W) and electronic characteristics of the perovskite manganites. Uehara et al has found that the chemical replacement of Pr for La (Pr is smaller than La)...
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