Magnetic Materials Quiz
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Questions and Answers

What is the defining characteristic of a paramagnetic material?

  • Presence of unpaired electron in an orbital (correct)
  • Alignment of magnetic moments
  • Natural magnetic field
  • Coherent magnetic field

    • What happens to ferromagnetism in iron when the temperature is raised?

  • It becomes diamagnetic
  • It becomes antiferromagnetic
  • It is destroyed and iron becomes paramagnetic (correct)
  • It becomes stronger

    • How is free energy defined for the given problem?

  • $F = E * TS$
  • $F = E + TS$
  • $F = E / TS$
  • $F = E - TS$ (correct)

    • What is the energy of aligned pairs of atoms in the given problem?

    <p>$-ε$</p> Signup and view all the answers

    What happens to the energy of misaligned pairs of atoms in the given problem?

    <p>$ε$</p> Signup and view all the answers

    What type of material is attracted to an applied magnetic field?

    <p>Paramagnetic material</p> Signup and view all the answers

    What type of material has a natural magnetic field?

    <p>Ferromagnetic material</p> Signup and view all the answers

    What happens to ferromagnetism in iron when the temperature is raised?

    <p>It is destroyed and iron becomes paramagnetic</p> Signup and view all the answers

    What is the energy of aligned pairs of atoms in the given problem?

    <p>$-\varepsilon$</p> Signup and view all the answers

    What is the defining characteristic of a paramagnetic material?

    <p>Presence of unpaired electrons producing a magnetic moment</p> Signup and view all the answers

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