Question:
Which of the following arrangement of magnetic moment is correct for ferrimagnetic substance?
Which of the following arrangement of magnetic moment is correct for ferrimagnetic substance?
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Ferrimagnetism = unequal opposing spins → weak net magnetism.
Updated On: May 19, 2025
- \(\uparrow\ \uparrow\ \uparrow\ \uparrow\ \uparrow\ \uparrow\ \uparrow\ \uparrow\)
- \(\downarrow\ \downarrow\ \downarrow\ \downarrow\ \downarrow\ \downarrow\ \downarrow\ \downarrow\ \downarrow\)
- \(\uparrow\ \downarrow\ \uparrow\ \downarrow\ \uparrow\ \downarrow\ \uparrow\ \downarrow\)
- \(\downarrow\ \uparrow\ \downarrow\ \uparrow\ \downarrow\ \uparrow\ \downarrow\ \uparrow\)
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The Correct Option is D
Approach Solution - 1
Ferrimagnetic substances have magnetic moments aligned in opposite directions (antiparallel), but the magnitudes are unequal, resulting in net magnetism.
This is unlike antiferromagnetic substances, where equal and opposite spins cancel out.
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Approach Solution -2
Which of the following arrangement of magnetic moment is correct for a ferrimagnetic substance?
Step 1: Understand ferrimagnetism:
Ferrimagnetism is a type of magnetic ordering found in materials like Fe₃O₄ (magnetite) and ferrites. In these substances, the magnetic moments of atoms or ions align in opposite directions (like in antiferromagnetism), but the magnitudes of the opposing moments are unequal.
As a result, complete cancellation of magnetism does not occur, and the material exhibits a net magnetic moment. This is different from antiferromagnetic substances where equal and opposite moments cancel each other completely.
Step 2: Identify the correct arrangement:
In ferrimagnetic substances, the spins (or magnetic moments) are aligned in opposite directions but in unequal amounts. A typical representation would show alternating up and down arrows, but with a net imbalance in one direction.
A possible way to express this is through an alternating pattern of up and down spins — showing the opposing orientations — but assuming some of the arrows represent stronger or more ions pointing in one direction.
From the given options, the arrangement:
\[ \downarrow\ \uparrow\ \downarrow\ \uparrow\ \downarrow\ \uparrow\ \downarrow\ \uparrow \]
shows alternating magnetic moments which suggest ferrimagnetic ordering where unequal magnetic moments oppose each other.
Final Answer:
\[ \boxed{\downarrow\ \uparrow\ \downarrow\ \uparrow\ \downarrow\ \uparrow\ \downarrow\ \uparrow} \]
Step 1: Understand ferrimagnetism:
Ferrimagnetism is a type of magnetic ordering found in materials like Fe₃O₄ (magnetite) and ferrites. In these substances, the magnetic moments of atoms or ions align in opposite directions (like in antiferromagnetism), but the magnitudes of the opposing moments are unequal.
As a result, complete cancellation of magnetism does not occur, and the material exhibits a net magnetic moment. This is different from antiferromagnetic substances where equal and opposite moments cancel each other completely.
Step 2: Identify the correct arrangement:
In ferrimagnetic substances, the spins (or magnetic moments) are aligned in opposite directions but in unequal amounts. A typical representation would show alternating up and down arrows, but with a net imbalance in one direction.
A possible way to express this is through an alternating pattern of up and down spins — showing the opposing orientations — but assuming some of the arrows represent stronger or more ions pointing in one direction.
From the given options, the arrangement:
\[ \downarrow\ \uparrow\ \downarrow\ \uparrow\ \downarrow\ \uparrow\ \downarrow\ \uparrow \]
shows alternating magnetic moments which suggest ferrimagnetic ordering where unequal magnetic moments oppose each other.
Final Answer:
\[ \boxed{\downarrow\ \uparrow\ \downarrow\ \uparrow\ \downarrow\ \uparrow\ \downarrow\ \uparrow} \]
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