Why do magnets only absorb iron and nothing else?

Magnetic fields exert forces on various metal pairs, with no exceptions. But there are three scenarios. In this way, metals are divided into three types: paramagnets, countermagnets, and ferromagnets.

1.Paramagnets: Can be slightly attracted to magnets.

2.Countermagnet: Slightly repelled by the magnet.

3.Ferromagnets: Magnets are strongly attracted.

There are only three types of ferromagnets: iron, cobalt, and nickel. The rest are either paramagnets or countermagnets. There are also their alloys, whose magnetic properties are close to ferromagnets in varying degrees.

Stainless steel containing nickel can be (strongly) attracted to magnets. Stainless steels that do not contain nickel (often containing chromium) react weakly to this iron and are not easily noticed. The latter is harder because it contains chromium. The former is commonly known as stainless iron.

Aluminum and copper are suspended in long, thin wires and made to stand still without oscillation. Slowly approach aluminum or copper laterally with a magnet and you will find that they will be slightly attracted or repulsed. Therefore, they are respectively the seastacks and the anti-magnets.

The scientific name of magnet is magnet.

A magnet is a type of magnet.

Magnets are able to attract metals such as iron, nickel, and cobalt, and are commonly known as magnets. It can be divided into common permanent magnets and electromagnets that are magnetic when energized. If a magnet is made into a rod or needle and suspended, it will naturally point to the north and south poles of the earth.

Magnets are divided into large magnets and small magnets.

Large magnets. Magnets are used in a wide range of applications, using electromagnets to make cranes that transport steel. When electrified, it becomes a powerful magnet, so it can absorb heavy steel. When you put down the steel, just cut off the power supply.

Small magnets. Compared to large magnets, the compass is smaller, lighter, and much less magnetic. The role of the compass is not to draw iron, but to reflect the magnetic force of the earth.

The property of magnets to attract substances like iron, cobalt, nickel, etc., is called magnetism. The area where the magnet is magnetically strong at both ends is called the magnetic pole, with one end being the north pole (n pole) and the other end being the south pole (s pole). Experiments have shown that the magnetic poles of the same sex repel each other, and the magnetic poles of the opposite sex attract each other.

There are many primary magnets with two opposite poles in iron, and when there is no external magnetic field, these primary magnets are arranged disordered, and their magnetism cancels each other out and does not show magnetism to the outside. When the iron is brought close to the magnet, these protomagnets are neatly arranged under the action of the magnet, so that the end close to the magnet has a polarity opposite to the polarity of the magnet and attracts each other. This shows that the iron can be magnetized by the magnet due to the presence of the original magnet.

Metals such as copper and aluminum do not have a primary magnet structure, so they cannot be attracted to magnets.

Magnetite not only absorbs iron, it absorbs iron, cobalt, nickel three kinds of elemental substances, and why suck them, because their molecules themselves are magnetic, but in the usual state of chaotic arrangement, so the magnetism cancels each other, and by the traction of external magnetic force, the molecular arrangement is orderly, resulting in magnetic force.

Magnets. can not attract except iron, cobalt, nickel elements.

All metal elements except iron, cobalt, and nickel are not attracted by magnets. Magnetite is a magnetic material.

It is able to attract iron, cobalt, nickel, three metals, there are two distinct poles, divided into n pole and S pole, the earth is a huge magnet.

The magnet can attract iron objects such as nails and iron blocks because it contains a substance called a magnet, which is magnetic and can attract objects with the same magnetic field.

The magnet inside the magnet has two poles, one is the south pole and the other is the north pole. When a magnet is placed next to an iron object, its south pole meets the north pole of the iron, creating a magnetic field that attracts magnets inside the magnet, allowing the magnet to attract iron.

It should be noted that magnets can only attract items with the same magnetic field, and if the magnetic field direction of the iron object is different, the magnet will not be able to attract it. In addition, magnetite's attraction is also limited, if the distance of the magnet is too far, or if the magnetism of the magnet is weakened, it will not be able to attract ferrous objects.

Magnetite can attract iron because it is magnetic, the main component of magnetite is ferric oxide, so it contains a large amount of Fe3O4, which makes it have strong magnetism. Under the action of the magnetic field, the Fe3O4 inside the magnetite will be arranged to form magnetic domains, and then form a relatively strong magnetic field. When another substance, such as metallic iron, is brought close to the magnet, these primordial magnets line up and appear magnetic, creating a magnetic attraction to the object.

Therefore, magnetism is the main reason why magnetite can attract iron.

It is worth noting that the magnetic size of magnetite is related to its composition, manufacturing process, etc. Different types of magnets contain different amounts of Fe3O4, so their magnetic properties will also differ. At the same time, the quality and shape of magnetite will also affect the performance of magnetism, which is a problem that needs to be paid attention to in practical use.

The most stable state of the molecular current ring in a ferromagnetic substance is to be balanced by a force couple at opposite ends of the ring, note the moment generated by the two tensile forces.

The pressure couple can also maintain equilibrium, but it is a weak equilibrium, and a small disturbance from the outside world will disturb this equilibrium, and the balance generated by the tensile moment will be jumped. At this point, the plane of the molecular current loop is perpendicular to the applied magnetic field.

Under the applied magnetic field, all molecular current rings (i.e., magnetic domains) that are not in this state will rotate to this state under the action of the Lorentz force. Finally, macroscopically it exhibits the isotropy of the molecular current magnetic field, i.e., it is magnetized.

After magnetization, the molecular current rings are all parallel to the same plane, the current direction is the same, the attracted surface can be equivalent to a large current ring, the horizontal component of the applied magnetic field will produce the Lorentz force on the current ring, the direction points to the external magnetic field substance, and the macroscopic performance is attractive.