Magnetic phases in lanthanum–strontium manganite–cobaltite La1.25Sr0.75MnCoO6

Structural and redox features of La0.7Bi0.3Mn1−xCoxO3 nanoperovskites for ethane combustion and CO oxidation

“…In such a case, the mean ionic radius of the B cation must show an increase, with an accompanying increase in the lattice volume (Table ). It is known that mean ionic radius of Mn 4+ ‐Co 2+ is larger than that of Mn 3+ ‐Co 3+ . Therefore, slight increase in the lattice volume has been attributed to assumption of substituting Co 2+ by Mn 3+ due to larger mean ionic radius of Mn 4+ ‐Co 2+ compared to Mn 3+ ‐Co 3+ .…”

“…In these compounds, the ferromagnetic‐paramagnetic transition associated with a metal‐insulator transition below the curie temperature (100< T C (K)<350) has been attributed to double‐exchange theory between ions of Mn 3+ ‐Mn 4+ (Co 3+ ‐Co 4+ ) . In manganite‐cobaltite LaMn 1− x Co x O 3 , the origin of metal‐ferromagnetic behavior is due to ferromagnetic interaction between ions of Mn 3+ ‐Mn 3+ and Mn 4+ ‐Co 2+ …”

“…The introduction of alkaline‐earth cations instead of La 3+ cations into LaMn 0.5 Co 0.5 O 3 increases the average degree of oxidation of Mn and Co. This can be led to a decrease in magnetization and T C and a transition to spin‐glass or cluster‐glass behavior …”

Local distortion in Co-doped LSMO from entropy-maximized charge density distribution

“…[4][5][6]. More and more researchers are investigating the critical behavior of transition metal-doped LSMO materials [7][8][9][10][11][12].…”

“…Mixing the transitional metal elements changes the complete ordering behavior of orbitals and, hence, makes the compound more interesting. When Co is doped in place of Mn, the resultant Co-doped LSMO material exhibits magnetic behavior that is important to explore [12,13]. The present analysis, using powder XRD, determines the effects of Co doping in Mn host lattice by Rietveld analysis and charge density distribution using the maximum entropy method (MEM).…”