Bissoy.com
Doctors Medicines MCQs Q&A

Which magnetic material obeys Curie's law in which the magnetic moment is localized at the atomic or the ionic sites where there is no interaction between neighboring magnetic moments?

Which magnetic material obeys Curie's law in which the magnetic moment is localized at the atomic or the ionic sites where there is no interaction between neighboring magnetic moments? Correct Answer Paramagnetic Materials

Paramagnetism:

  • There are several theories of paramagnetism, which are valid for specific types of material.
  • Langevin's model, which is true for materials with non-interacting localized electrons, states that each atom has a magnetic moment that is randomly oriented as a result of thermal agitation.
  • The application of a magnetic field creates a slight alignment of these moments and hence a low magnetization in the same direction as the applied field.
  • As the temperature increases, then the thermal agitation will increase and it will become harder to align the atomic magnetic moments and hence the susceptibility will decrease.
  • This behavior is known as the Curie law and χ = C / T, where C is a material constant called the Curie constant. 
  • Materials that obey this law are materials in which the magnetic moments are localized at the atomic or ionic sites and where there is no interaction between neighboring magnetic moments.
  • The hydrated salts of the transition metals, e.g. CuSO4·5H2O, are examples of this type of behavior as the transition metal ions, which have a magnetic moment, are surrounded by a number of non-magnetic ions/atoms, which prevent interaction between neighboring magnetic moments. 

Related Questions

Given below are characteristics of an “ionic compound”. Identify the option that gives INCORRECT information. A. Ionic compounds are generally found in solid state. B. Ionic compounds have low melting point and high boiling point. C. Ionic compounds are soluble in solvents like benzene, etc. D. The X-ray analysis of ionic compounds reveals that they exist as molecules.
In the question below is given a statement followed by two courses of action numbered I and II. On the basis of the information given in the statement to be true, then decide which of the suggested courses of action logically follow(s) for pursuing. Statement: India has been constantly being attacked by militants across the border of neighboring country.  Course of action: I. India should engage into war with the neighboring country.  II. India should warn the neighboring country to prevent the militants from operating across the border. 
Consider the following statements regarding magnetic materials: 1. A diamagnetic material has no permanent dipole 2. Paramagnetic material has anti parallel orientation of equal moments with neighbouring dipoles 3. Ferrimagentic material has anti parallel orientation of unequal moments between neighbouring diploes Which of these statements are correct?
Consider the following statements: 1. Both ferromagnetic and ferrimagnetic materials have domain structures; each domain has randomly oriented magnetic moments when no external field is applied. 2. Both ferromagnetic and ferrimagnetic materials make those domains that have a favourable orientation to the applied field grow in size. 3. The net magnetic moment in ferromagnetic materials is higher than that in ferrimagnetic materials. 4. The net magnetic moment in ferrimagnetic materials is higher than that in ferromagnetic material. Which of the above statements are correct?
Consider the following statements :  a. As of July 2018, a total of 1092 World Heritage sites exist across 167 countries. b. Italy, with 54 World Heritage sites has the most of any country (up to July 2018). c. India has 39 World Heritage sites (up to July 2018). d. A collection of Victorian, Gothic, and Art Deco buildings of Mumbai are declared as World Heritage sites in 2018.  Which of the above statements are correct ?
The question below consists of a set of labelled sentences. These sentences, when properly sequenced form a coherent paragraph. Select the most logical order of sentences from among the options. P: Young boys and girls seem to have become inordinately addicted to these sites. Q: The parents, teachers and the government must look into the problems being caused by these networking sites and must formulate a strategy either to curb or completely stop its fast growing negative influence on the minds of our youth. R: Smart-phones, computers, social media, internet and networking sites such as Facebook and Twitter have become source of major distractions for students. S: They are thoughtlessly and uselessly wasting their precious time on these sites.
The question below consists of a set of labelled sentences. These sentences, when properly sequenced form a coherent paragraph. Select the mostlogical order of sentences from among the options. P: Young boys and girls seem to have become inordinately addicted to these sites.
Q: The parents, teachers and the government must look into the problems being caused by these networking sites and must formulate a strategy either to curb or completely stop its fast growing negative influence on the minds of our youth.
R: Smart-phones, computers, social media, internet and networking sites such as Facebook and Twitter have become source of major distractions for students.
S: They are thoughtlessly and uselessly wasting their precious time on these sites.
With reference to ionic compounds, consider the following statements.
1. Ionic compounds are insoluble in alcohol.
2. Ionic compounds in the solid state are a good conductor of electricity.
Which of these statements is/are correct?
With reference to ionic compounds, consider the following statements.
1. Ionic compounds are insoluble in alcohol.
2. Ionic compounds in the solid state are good conductor of electricity.
Which of the statement given above is/are correct?
Chemical and Ionic Equilibrium mcq question image
According to the Ehrenfest classification of phase transition the above diagram refers to