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GATE 2024 PH – Question 52

Solid State Physics · dia, para, ferro, antiferro and ferri magnetism, ferromagnetic domains · 2 marks · Multiple select

The temperature dependence of magnetic susceptibility (Column I) and materials (Column II) are shown. Which option(s) is/are correct?

Column IColumn II
1: cusp curveP: Diamagnetic
2: divergent curveQ: Paramagnetic
3: constant curveR: Ferromagnetic
4: inverse-T curveS: Antiferromagnetic
Four susceptibility curves and four magnetic-material names.
  1. 2 −P, 4 −Q, 3 −S
  2. 4 −P, 1 −Q, 2 −R
  3. 4 −Q, 2 −R, 1 −S
  4. 3 −P, 4 −Q, 2 −R

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Correct answer: (C) 4 −Q, 2 −R, 1 −S; (D) 3 −P, 4 −Q, 2 −R

Explanation

Curve 1 has an antiferromagnetic cusp, curve 2 a ferromagnetic Curie divergence, curve 3 constant diamagnetic susceptibility magnitude, and curve 4 Curie-law paramagnetism.