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(i) Write the type of magnetism observed...

(i) Write the type of magnetism observed when the magnetism observed when the magnetic moments are aligned in parallel and anti parallel direction in unequal number . ltbnrgt (ii) Which stoichiometric defect decreases the density of the crytal?

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(i) when magnetic moment is aligned in parallel direction it is called ferromagnetic and it magneic moment is aligned in antiparallel direction it is called antiferromagnetic
(ii) Due to schottky defect vacencies are formed and density decreases
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