Related Experiment Video
Updated: Mar 14, 2026
12:20
Sputter Growth and Characterization of Metamagnetic B2-ordered FeRh Epilayers
Published on: October 5, 2013
15.1K
Unique magnetostriction of Fe68.8Pd31.2 attributable to twinning
Jake Steiner1, Abdellah Lisfi2, Tomoyuki Kakeshita3
1University of Maryland, Department of Materials Science and Engineering, College Park, MD 20902, USA.
Scientific Reports
|October 1, 2016
Summary
Fe68.8Pd31.2 displays remarkable, reversible magnetostriction due to premartensitic twin clusters. This unique behavior links magnetic fields to twin movements, offering new material possibilities.
Area of Science:
- Materials Science
- Condensed Matter Physics
Background:
- Fe-Pd alloys are known for their magnetic and structural properties.
- Magnetostriction is a key property for magnetic materials applications.
Purpose of the Study:
- To investigate the origin of the large, reversible magnetostriction in Fe68.8Pd31.2.
- To understand the relationship between magnetic behavior and structural features.
Main Methods:
- Experimental characterization of Fe68.8Pd31.2.
- Analysis of magnetic and elastic properties.
Main Results:
- Fe68.8Pd31.2 exhibits ~400 ppm magnetostriction at room temperature.
- The material shows linear, isotropic, and hysteresis-free magnetization.
- Premartensitic magnetoelastic twin clusters are identified as the cause.
Conclusions:
- Twin clusters reduce elastic and magnetic energy, linking material behavior.
- Low anisotropy energy results in crystalline independence of magnetization.
- Magnetic field application induces simultaneous magnetic and twin domain movement.
More Related Videos
08:55Methods of Ex Situ and In Situ Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses
Published on: June 7, 2018
9.0K
09:06Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope
Published on: March 24, 2019
8.7K
Related Concept Videos
01:31Ferromagnetism
3.4K
Materials like iron, nickel, and cobalt consist of magnetic domains, within which the magnetic dipoles are arranged parallel to each other. The magnetic dipoles are rigidly aligned in the same direction within a domain by quantum mechanical coupling among the atoms. This coupling is so strong that even thermal agitation at room temperature cannot break it. The result is that each domain has a net dipole moment. However, some materials have weaker coupling, and are ferromagnetic at lower...
3.4K
03:02Colors and Magnetism
14.4K
Color in Coordination Complexes
When atoms or molecules absorb light at the proper frequency, their electrons are excited to higher-energy orbitals. For many main group atoms and molecules, the absorbed photons are in the ultraviolet range of the electromagnetic spectrum, which cannot be detected by the human eye. For coordination compounds, the energy difference between the d orbitals often allows photons in the visible range to be absorbed and emitted, which is seen as colors by the human...
When atoms or molecules absorb light at the proper frequency, their electrons are excited to higher-energy orbitals. For many main group atoms and molecules, the absorbed photons are in the ultraviolet range of the electromagnetic spectrum, which cannot be detected by the human eye. For coordination compounds, the energy difference between the d orbitals often allows photons in the visible range to be absorbed and emitted, which is seen as colors by the human...
14.4K
01:30Paramagnetism
3.1K
Paramagnets are materials with unpaired electrons that possess a finite magnetic moment. In the absence of a magnetic field, these moments are randomly oriented, and thus the net moment is zero. Under an external field, a torque acting on the moments tends to align them along the field's direction. However, the random thermal motion of electrons produces a torque opposite to the external field and tries to disorient the moments. These two competing effects align only a few moments along the...
3.1K
01:26Diamagnetism
3.2K
Materials consisting of paired electrons have zero net magnetic moments. However, when these materials are placed under an external magnetic field, the moments opposite to the field are induced. Such materials are called diamagnets. Diamagnetism is the response of the diamagnets when placed in an external magnetic field.
Diamagnetism was discovered by Anton Brugmans in 1778 when he observed that bismuth gets repelled by magnetic fields, thus theorizing that diamagnets get repelled by magnets....
Diamagnetism was discovered by Anton Brugmans in 1778 when he observed that bismuth gets repelled by magnetic fields, thus theorizing that diamagnets get repelled by magnets....
3.2K
01:31Magnetic Susceptibility and Permeability
2.6K
In linear magnetic materials, like paramagnets and diamagnets, magnetization is proportional to the magnetic field intensity. The constant of proportionality, a dimensionless number, is called magnetic susceptibility. The value of the susceptibility depends on the type of material.
When diamagnetic materials are placed under an external magnetic field, the moments opposite to the field are induced. Hence, the susceptibility for diamagnets has a minimal negative value of 10-5–10-6. Since...
When diamagnetic materials are placed under an external magnetic field, the moments opposite to the field are induced. Hence, the susceptibility for diamagnets has a minimal negative value of 10-5–10-6. Since...
2.6K
01:24Potential Due to a Magnetized Object
850
Magnetic dipoles in magnetic materials are aligned when placed under an external magnetic field. For paramagnets and ferromagnets, dipole alignment occurs in the direction of the magnetic field. However, the dipoles align opposite to the field in the case of diamagnets. This state of magnetic polarization due to the external field is called magnetization. Magnetization is defined as the dipole moment per unit volume. It plays a similar role to polarization in electrostatics.
The vector...
The vector...
850