which of the following statements are correct ?
(a)Ferrimagnetic substance lose ferrimagnetism on heating and become paramagnetic
(b)Ferrimagnetic substance do not lose ferrimagnetism on heating and Remain ferromagnetic
(c)Antiferromgnetic substance have domain structures similar to ferromagnetic substance and their magnetic moment are not cancelled by each other
(d)Antiferromagnetic substance have domain structures similar to ferromagnetic substance and their magnetic moment are not cancelled by each other

Options

A. Ferrimagnetic substance lose ferrimagnetism on heating and become paramagetic
B. Ferrimagnetic substance do not lose ferrimagnetism on heating and Reamain ferrmagnetic
C. Antiferromgnetic substance have domain structures simolar to ferromagnetic substance and their magngnetic moment are not cancelled by eash other
D. in ferromagnetic substance , all the domains get oriented in the directon of magnetic field and ramain as such even after removing magnetic field

Explanation

To determine which of the provided statements about ferrimagnetic and antiferromagnetic substances are correct, let's analyze each statement step by step.

### Step 1: Analyze Statement (a)
**Statement (a):** Ferrimagnetic substances lose ferrimagnetism on heating and become paramagnetic.

- **Explanation:** Ferrimagnetic materials consist of two different types of ions with unequal magnetic moments. When heated, thermal energy disrupts the alignment of these moments, causing the material to lose its ferrimagnetism and transition to a paramagnetic state, where the magnetic moments are randomly oriented.
- **Conclusion:** This statement is **correct**.

### Step 2: Analyze Statement (b)
**Statement (b):** Ferrimagnetic substances do not lose ferrimagnetism on heating and remain ferromagnetic.

- **Explanation:** This statement is incorrect. Ferrimagnetic substances do lose their magnetic properties when heated sufficiently, transitioning to a paramagnetic state rather than remaining ferromagnetic.
- **Conclusion:** This statement is **incorrect**.

### Step 3: Analyze Statement (c)
**Statement (c):** Antiferromagnetic substances have domain structures similar to ferromagnetic substances, and their magnetic moments are not cancelled by each other.

- **Explanation:** Antiferromagnetic materials do have a domain structure, but their magnetic moments are aligned in opposite directions, which results in cancellation of the net magnetic moment. Therefore, the moments do cancel each other out.
- **Conclusion:** This statement is **incorrect**.

### Step 4: Analyze Statement (d)
**Statement (d):** Antiferromagnetic substances have domain structures similar to ferromagnetic substances, and their magnetic moments are not cancelled by each other.

- **Explanation:** This statement is essentially the same as statement (c) and is also incorrect for the same reasons. Antiferromagnetic materials have opposing magnetic moments that do cancel each other out.
- **Conclusion:** This statement is **incorrect**.

### Final Summary:
- **Correct Statement:** (a)
- **Incorrect Statements:** (b), (c), (d)