Solve Solid State Physics Questions: KC1, NAC1, X Rays

For question 3, the definition of an optical branch and acoustic branch can vary slightly depending on the context, but generally speaking, the optical branch refers to the modes of vibration where the atoms in the crystal lattice move out of phase with each other, while the acoustic branch refers to the modes where the atoms move in phase. And for the final question, the scattering of X-rays from KC1 is influenced by its crystal structure, which is similar to that of a simple cubic lattice with a lattice constant half the true one. This is why it appears to scatter X-rays as though it had that structure. In summary, the conversation covers questions about resources for solid state physics problems, how to show a superconductor acts as a perfect
  • #1
fabsuk
51
0
1 few questions here

Does anyone know websites that i can get solid state physics problems and answers.

2ndly How do you show a semiconductor of type 1
behaves as a perfect diamagnet.

I know by drawing a diagram but don't how to show it

3rdly

what is the definition of an 'optical branch' and 'acoustic branch' for chain of atoms. I can't find
clear definitions

4thly

explain why kc1 which has the nac1 structure scatters X rays as though it had the simple cubic structure with half the true lattice spacing

All these questions are bothering and can't find them in books.
 
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  • #2
The optical and acoustic branches come about because the lattice has a basis, i.e. two different atomic species. The acoustic branch is due to the atoms oscillating in phase with each other. The optical branch is seen when the atoms of different masses oscillate out of phase with each other.

Your text should have these answers in there.
 
  • #3
fabsuk said:
All these questions are bothering and can't find them in books.
Get a copy of Kittel, Introduction to Solid State Physics. (Some people prefer older editions).
As for question 2, that should be a superconductor not a semiconductor. There is a huge difference!
 

1. What is solid state physics?

Solid state physics is a branch of physics that deals with the study of the physical properties of solid materials, such as metals, semiconductors, and insulators. It focuses on the behavior of electrons, atoms, and molecules within these materials and how they affect their mechanical, thermal, and electrical properties.

2. What are KC1 and NAC1?

KC1 and NAC1 are chemical compounds commonly used in solid state physics experiments. KC1, or potassium chloride, is an ionic compound that forms white, cubic crystals and is often used as a reference material for studying the properties of ionic solids. NAC1, or sodium chloride, is also an ionic compound and is used as a standard for studying the properties of crystalline solids.

3. How are X-rays used in solid state physics?

X-rays are a type of electromagnetic radiation with high energy that can penetrate through materials and interact with their atoms. In solid state physics, X-rays are used to study the atomic and molecular structure of materials, as well as their electronic and magnetic properties. X-ray diffraction, for example, is a common technique used to analyze the crystal structure of solids.

4. What are some practical applications of solid state physics?

Solid state physics has many practical applications, including the development of electronic devices such as transistors, computer chips, and solar cells. It is also used in the development of new materials for various industries, such as aerospace, energy, and healthcare. Additionally, solid state physics plays a crucial role in understanding and improving the performance of existing technologies, such as batteries and superconductors.

5. What are some challenges in solving solid state physics questions?

Solving solid state physics questions can be challenging due to the complex nature of materials and their properties. It requires a strong understanding of concepts such as quantum mechanics, thermodynamics, and statistical mechanics. Additionally, the mathematical equations used in solid state physics can be quite involved and require a deep understanding of calculus and other advanced mathematical techniques.

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