Multiferroic magnetoelectrics are materials which are both ferromagnetic and ferroelectric in the same phase. As a result they have a spontaneous magnetization which can be switched by an applied magnetic field, a spontaneous polarization which can be switched by an applied electric field, and often ...
This idea is commonly used with low-coercivity magnetic materials, such as iron or Alnico magnets. For example, the magnets used in door and window alarm sensors are usually long, cylindrical Alnico magnets. We discussed the influence of shape on magnetization in some detail in our in-depth ...
What is the most important element for creating a magnetic field, and why? Which statement best describes why some materials are not magnetic? a) Magnetic materials have many spinning unpaired electrons. b) Paired electrons spin in opposite directions, canceling their magnetic f...
Why are incandescent bulbs typically made of very thin glass? Why can't all materials become superconductors? How magnetite got the magnetic properties and other metals don't? Explain why copper wire is a good conductor of electricity.
In some places older impact craters were split and pulled apart. There are even indications of large-scale crustal movements that are similar to the plate tectonics of Earth. [#paragraph6]Why is Ganymede different from Callisto? Possibly the small difference in size and internal heating between ...
The thermodynamic process of the Siberian high and snow cover extent in the area are predictability sources of the Siberian High intensity in November, and the NCEP-CFSv2 can reasonably reproduce these predictability sources in November.1 引言 由于海陆热力差异的影响,冬半年在欧亚大陆对流层低层形成...
When the images are captured, the radiographer can then turn off the magnetic field and the gradients and the MRI will be complete. In some cases, the procedure may have to be repeated if the images obtained are not of high enough quality. ...
a hard disk drive is a traditional storage device that uses spinning disks and magnetic heads to read and write data. it offers large storage capacities at relatively lower costs compared to other storage devices. hard disk drives (hdds) are commonly used in desktop and laptop computers for ...
Regarding the case material, it's worth noting that not all phone cases are created equal, especially in the context of wireless charging. Cases made from thick materials or those incorporating metal elements can act as barriers to the electromagnetic field required for charging. This interference ...
Magnets are materials that produce magnetic fields, which attract specific metals. Every magnet has a north and a south pole. Opposite poles attract, while like poles repel. While most magnets are made from metals and metal alloys, scientists have devised ways to create magnets from composite mat...