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What is ferrimagnetism?...

What is ferrimagnetism? 

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Which arrangement of electrons describes ferrimagnetism?

How many of the following compounds show ferrimagnetism ? FeO_4 , MgFe_2O_2 , NiFe_2O_4 , MnO , CrO_2

How many of the following compounds show ferrimagnetism ? Fe_(3)O_(4), MgFe_(2)O_(4), NiFe_(2)O_(4), MnO, CrO_(2)

What are ferromagnetic, antiferromagnetic and ferrimagnetic substances?

Ferrites are ferrimagnetic substances. Substantiate.

Explain Ferrimagnetisms with suitable example.

What type of substances would make better permanent magnets , ferromagnetic or ferrimagnetic ? Justify your answer

(A) On heating ferromagnetic or ferrimagnetic substances, they become paramagnetic (R) On heating randomsiation of magnetic domains occurs

Explain the following with suitable examples: (i) Ferromagnetism (ii) Paramagnetism (iii) Ferrimagnetism (iv) Antiferromagnetism (v) 12-16 and 13-15 group compounds.

(A): Fe_(3)O_(4) is ferrimagnetic at room temperature but becomes paramagnetic at 850 K (R): The magnetic moments in Fe_(3)O_(4) ale aligned equally in parallel and antiparallel directions which on heating randomise