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The area of hysteresis loop in a ferromagnetic material of?
The area of the hysteresis loop in a ferromagnetic material represents the energy losses that occur during the magnetization and demagnetization processes. It is a measure of the energy dissipated as heat due to the magnetic domain reorientation within the material. The larger the area of the hysteresis loop, the greater the energy losses and the lower the efficiency of the material in applications such as transformers or inductors.
What characteristics exists in magnets that does not exist in materials that lack magnetism?
Magnets have domains of aligned magnetic moments, resulting in a macroscopic magnetic field, which is not present in non-magnetic materials. Additionally, magnets exhibit magnetic hysteresis, the ability to retain magnetic properties after being magnetized, which is absent in materials lacking magnetism. Lastly, magnets can attract or repel other magnets or magnetic materials, a behavior not seen in non-magnetic materials.
Why Soft Iron is suitable for preparing pole pieces in earphones as well as loudspeakers instead of steel?
Soft iron is suitable for preparing pole pieces in headphones as well as loudspeakers instead of steel because soft iron materials have high permeability and low coercive force. They are easily magnetized and demagnetized. Examples of soft magnetic material are silica-steel (Fe-97 and Si-3), Sandust (Al-5, Si-10, Fe-85). Soft iron materials have following characteristics:- Thin hysteresis loop. High permeability. Low coercivity. High susceptibility. Low hysteresis loss. Low eddy current loss. Whereas materials made up of steel have totally different properties i.e. High permeability and High hysteresis loss. Large hysteresis loop. High coercivity residual magnetism.
What might be used outdoors to protect the instruments from direct sunlight and wind?
Instrument covers or cases specifically designed for outdoor use can help protect instruments from direct sunlight and wind. These covers are usually made of durable materials that can withstand outdoor conditions while providing protection for the instruments inside. Additionally, setting up a temporary shelter or canopy can offer additional protection from the elements.
What are the disadvantages of SMArt alloys?
Shape Memory Alloys, or SMAs, have limitations such as limited deformation range, slow response time, and high cost compared to traditional materials. Additionally, SMAs can exhibit hysteresis and fatigue, which can affect their long-term reliability and performance.
How does one receive hysteresis?
Hysteresis occurs most commonly in ferromagnetic and ferroelectric materials such as rubber bands and shape-memory alloys. When the material is flexed the atoms often break apart causing hysteresis.
What has the author Todd C MacLeod written?
Todd C. MacLeod has written: 'Modeling of metal-ferroelectric-semiconductor field effect transistors' -- subject(s): Field effect transistors, Current density, Electric potential, Ferroelectric materials, Mathematical models, Hysteresis
What is the meaning of Ferroelectric?
In physics the ferroelectric effect is an electrical phenomenon whereby certain materials may exhibit a spontaneous dipole moment, the direction of which can be switched between equivalent states by the application of an external electric field. Placing a ferroelectric material between two conductive plates creates a ferroelectric capacitor. Ferroelectric capacitors exhibit nonlinear properties and usually have very high dielectric constants. The fact that the internal electric dipoles can be forced to change their direction by the application of an external voltage gives rise to hysteresis in the "polarization vs voltage" property of the capacitor. In this case, polarization is defined as the total charge stored on the plates of the capacitor divided by the area of the plates. Hysteresis means memory and ferroelectric capacitors are used to make ferroelectric RAM for computers and RFID cards. Above retrieved from Answers.com Viper1
Can you measure hysteresis loss for diamagnetic materials?
what is hysteresis losses
What is Ferroelectric domains explain in details?
Ferroelectric domains are regions within a ferroelectric material where the electric dipoles are aligned in a specific direction. These domains can switch orientation when an external electric field is applied, allowing the material to exhibit ferroelectric properties. The presence of domains allows ferroelectric materials to have unique properties such as piezoelectricity and non-volatile memory storage.
Iron is ferroelectric but copper is not why?
Iron is not ferroelectric. Ferroelectric materials possess a permanent electric dipole moment that can be reversed by an external electric field. Copper does not have this property because it lacks a crystal structure that allows for the alignment of dipoles.
What is ferroelectric substance?
A ferroelectric substance is a material that exhibits a spontaneous electric polarization that can be reversed by the application of an external electric field. This property allows ferroelectric materials to be used in various applications such as memory storage devices, sensors, and actuators. Examples of ferroelectric substances include lead zirconate titanate (PZT) and barium titanate.
Does a diamagnetic substance exhibit hysteresis loss?
No, diamagnetic materials do not exhibit hysteresis loss because they do not have permanent magnetic moments that can be aligned and re-aligned in response to an external magnetic field. Hysteresis loss occurs in ferromagnetic materials due to the energy dissipated during the reversal of magnetic domains.
Why magnitism lags behind magnetisg current in hysteresis?
Because that's the very definition of hysteresis. The reason there is hysteresis is because some energy is required to change the magnetization of many materials - you can compare this to a type of friction, though the details vary from the usual friction.
Why electrocaloric effect observed in ferroelectric polymers only?
Its not true that electrocaloric effect (ECE) is observed only in ferroelectric polymers. ECE can be found in any typical dielectric material. If polarization switches from one direction to the other upon application or withdrawl of electric filed, the temperature of the material changes. It happens both in organic as well as inorganic materials. It is found that the EC coefficent is high near ferroelectric phase transition temperature.
What instruments are used to measure water contents?
Instruments such as moisture meters, hygrometers, and gravimetric methods are commonly used to measure water content in various materials such as soil, food products, and in the air. These instruments provide accurate and reliable measurements of water content levels in a given substance.
What is the significance of looping?
In hysteresis materials it represents the energy dissipated in them during the cycle of magnetization & demagnetization (just refer any hysteresis loop diagram) . This is used in many applications especially in aerospace to damp the oscillations in satellite.
