0
What else can I help you with?
Why should the material used for making permanent magnets have high coercivity?
High coercivity in permanent magnets ensures that they can maintain their magnetization in the presence of external magnetic fields, making them stable and reliable for long-term use. This property also allows the magnetic material to resist demagnetization, ensuring that the magnet retains its magnetic properties over time.
What is the name of the temperature at which a magnetic material will lose it's magnetic alignment?
The temperature at which a magnetic material loses its magnetic alignment is called the Curie temperature. Above this temperature, the material becomes paramagnetic as the thermal energy disrupts the alignment of the magnetic domains.
What does hysteresis mean in magnetism?
A hysteresis curve is a plot, graph or some kind of pictorial representation of the relationship between the magnetic field strength (H) and the magnetic flux density (B) of a material under inspection.
Is antimony magnetic?
Antimony is not magnetic in standard conditions because it is a diamagnetic material, meaning it creates a weak repulsive force in the presence of a magnetic field. It does not retain magnetization when the external magnetic field is removed.
What are the small individual areas within a magnet called?
magnetic domains. itdescribes a region within a magnetic material which has uniform magnetization. This means that the individual magnetic moments of the atoms are aligned with one another and point in the same direction. Below a temperature called the Curie temperature, a piece of ferromagnetic material undergoes a phase transition and its magnetization spontaneously divides into many tiny magnetic domains, with their magnetic axes pointing in different directions. Magnetic domain structure is responsible for the magnetic behavior of ferromagnetic materials like iron. The regions separating magnetic domains are called domain walls where the magnetisation rotates coherently from the direction in one domain to that in the next domain.
The effect of temperature on magnetization?
Each material which can be magnetized has a material specific, so called Curie temperature. Above this specific temperature the material will lose its magnetism and the ability to be magnetized. Returning below this temperature, the material regains its magnetic properties.
A material that holds its magnetic properties without losing them is a?
ferromagnetic material, such as iron, nickel, or cobalt. These materials can retain their magnetization even after the external magnetic field is removed.
What happens above Curie temperature?
Above the Curie temperature, a ferromagnetic material loses its permanent magnetization and becomes paramagnetic. This occurs due to thermal energy disrupting the alignment of magnetic domains within the material, causing it to lose its magnetic properties.
What is magnetization of iron?
the process of converting iron to a permanent magnet is called magnetization. As iron is a ferro magnetic material it is magnetized by applying strong magnetic field across it , this makes the alignment of all the magnetic dipoles present in iron in the same direction .Even after the external magnetic field is removed they retain their arrangement , thus it becomes a permanent magnet
Why the magnitude of the saturation magnetization decreases with increasing temperature for ferromagnetic material?
As temperature increases, thermal energy disrupts the alignment of magnetic moments in ferromagnetic materials. This causes a decrease in the alignment of magnetic domains, leading to a decrease in the overall saturation magnetization.
A piece of magnetic material that retains its magnetic properties after it is removed from a magnetic field?
A material that retains its magnetic properties after being removed from a magnetic field is called a permanent magnet. These materials are able to maintain their magnetization due to their atomic or molecular structure that allows them to have a permanent magnetic field. Common examples include materials like iron, cobalt, and nickel.
Which magnetic material can retain permanent magnetization?
False permanent magnets can but electromagnets need a running current A+
Define intensity of magnetization?
Intensity of magnetization is a measure of the magnetic moment per unit volume of a material when it is placed in a magnetic field. It quantifies the extent to which a material can become magnetized in response to an external magnetic field.
What is thero-magnetic?
Thermo-magnetic refers to the interaction or effect of temperature on the magnetic properties of a material. Changes in temperature can influence the magnetic behavior of materials, causing variations in their magnetic properties such as magnetization, susceptibility, or coercivity. This effect is commonly observed in magnetic materials and is an important consideration in various applications such as magnetic storage devices and temperature sensors.
What is domain in magnet?
A magnetic domain is a region of uniform magnetization within a material.
What is magnetic hysteresis?
Magnetic hysteresis is the phenomenon where the magnetization of a material depends not only on the current magnetic field, but also its history. When the magnetic field is applied and then removed, the material retains some magnetization, showing a lag or "memory" in its response to changing magnetic fields. This results in the characteristic hysteresis loop observed in magnetic materials.
How is a permanent magnetic created and what are the key steps involved in the process?
A permanent magnet is created by aligning the magnetic domains within a material, such as iron or steel, in a specific direction. This alignment is achieved through a process called magnetization, which involves exposing the material to a strong magnetic field and then cooling it to lock in the alignment of the domains. The key steps involved in creating a permanent magnet include selecting the appropriate material, magnetizing the material, and then shaping and finishing the magnet to meet the desired specifications.
