Which outcome arises when doping introduces mismatched d-orbitals in manganite perovskites?

💡 Explanation

Colossal magnetoresistance appears due to double exchange, where ferromagnetic order and conductivity are maximized when electron transfer is unimpeded. This outcome happens because the spin alignment minimizes electron scattering, therefore magnetoresistance is colossal, rather than weak, under other scattering conditions.

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