Bloch wall

Okay kiddo, let's talk about something called a bloch wall. Imagine you have a magnet, and magnets have something called north and south poles, you know that right? When you use a magnet to pick up a paper clip or a toy car, it sticks to one end of the magnet, because that's the North pole.

Now, let's say we cut that magnet in half. We would have two pieces, and each piece would have its own north and south pole. But if we cut it in half again, and again, and again, eventually we would end up with really small pieces called domains. Each of these tiny domains is like its own little magnet with its own north and south pole.

Now, when all of these domains are lined up perfectly, the magnet is really strong. But sometimes, some of the domains start to point in different directions, and that's what we call a bloch wall. It's like a wall between where the domains are all pointing one way and where they're pointing in a different direction.

This wall is super thin, and the domains can actually move around within the wall. Think of it like a river with a current flowing in one direction, but then there's a section where the water swirls around and doesn't go anywhere. That swirling part is like the bloch wall.

Scientists study bloch walls because they can help us understand how magnets work and how we can make them even stronger. And that's the basic idea of a bloch wall, kiddo.