Doubt regarding definition of magnetic susceptibility

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Discussion Overview

The discussion revolves around the definitions and relationships of magnetic susceptibility, intensity of magnetisation, and magnetising force. Participants explore the implications of these definitions and their mathematical relationships, questioning whether the definitions align with the expected physical interpretations.

Discussion Character

  • Conceptual clarification
  • Debate/contested

Main Points Raised

  • One participant defines intensity of magnetisation (I) and magnetising force (H), stating that magnetic susceptibility (Xm) is the ratio of I to H, and questions the implications of large values of I and H on Xm.
  • Another participant challenges the accuracy of the claim that higher values of I and H would lead to higher magnetic susceptibility, suggesting that the initial statement may not be correct.
  • A participant expresses concern that the definitions from their school textbook seem to contradict the mathematical relationships, questioning the validity of the textbook descriptions.
  • A later reply suggests reviewing external sources, such as Wikipedia articles, to compare definitions and gain further insight into the topic.

Areas of Agreement / Disagreement

Participants do not reach a consensus; there are competing views regarding the accuracy and interpretation of the definitions and their implications for magnetic susceptibility.

Contextual Notes

Participants express uncertainty about the definitions and their representations, indicating potential limitations in the textbook descriptions and the need for further clarification.

hale2bopp
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Intensity of magnetisation(I) is defined as the magnetic moment per unit volume of the material. It represents the extent to which a specimen is magnetised.

I=M/V

Magnetising force or magnetising intensity(H) is defined as the number of ampere turns flowing round unit length of toroidal solenoid to produce the magnetic induction B, in the solenoid.
It represents the degree to which a magnetic field can magnetise a material.

H=nI

Magnetic susceptibility (Xm) of materials is defined as the ratio of intensity of magnetsiation of that material to the magnetising intensity of the magnetic field.
It represents the ease with which a specimen can be magnetised.

Xm=I/H

My question is, according to the definitions and what they represent, of I and H, if I and H are large, doesn't it mean that the extent to which the specimen is magnetised , and the degree to which a magnetic field can magnetise the specimen, are more? In that case, that would make magnetic susceptibility more since the specimen can be more easily magnetised. Then how come according to the formula, is H is more, Xm is less? Is there something missing in the definition, or something wrong in my understanding?
 
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In that case, that would make magnetic susceptibility more since the specimen can be more easily magnetised.

I don't think this statement is accurate: [What is your source? ]

It represents the degree to which a magnetic field can magnetise a material.
 
These definitions and what they represent, were copied out of my school textbook. It seems to me, that the definitions and what they represent, are contradicting the mathematical definition. So is what they have written as 'what the quantities represent', wrong?
 

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