Ferroelectricity is a characteristic of certain materials that have a spontaneous electric polarization that can be reversed by the application of an external electric field. All ferroelectrics are also piezoelectric and pyroelectric, with the additional property that their natural electrical polarization is reversible. The term is used in analogy to ferromagnetism, in which a material exhibits a permanent magnetic moment. Ferromagnetism was already known when ferroelectricity was discovered in 1920 in Rochelle salt by Joseph Valasek. Thus, the prefix ferro, meaning iron, was used to describe the property despite the fact that most ferroelectric materials do not contain iron. Materials that are both ferroelectric and ferromagnetic are known as multiferroics. (Wikipedia).
Ferroelectrics and Piezoelectrics
Why is it that titanates and zirconates can achieve such remarkably large dielectric constants? These perovskites have ions that can move substantially as the structure switches from cubic to tetragonal. The transition occurs at the Curie Temperature above which there is no net polarizatio
From playlist Materials Sciences 101 - Introduction to Materials Science & Engineering 2020
Patterns in a ferrofluid film confined between glass sheets, under water. Neodymium magnet moved by hand from below. See http://www.electricstuff.co.uk/ferro.html for more info
From playlist Projects & Installations
How Ferroelectricity Could Change the Way We Store Data
This hidden ferroelectric “particle” has evaded scientists for years, until recent studies have now discovered it and hacking into their potential. Here’s How We Could Store Data on a Single Atom - https://youtu.be/7FYmHy85A7I Read More: A rhombohedral ferroelectric phase in epitaxial
From playlist Elements | Season 4 | Seeker
Why Ferrofluid is Revolutionary
Ferrofluid is a type of fluid that contains suspended micro particles of iron, magnetite or cobalt in a solvent. The solvent is typically an organic fluid as a carrier, or water in some special cases where oil can be dangerous to use. Join our YouTube channel by clicking here: https://b
From playlist Materials Lab
Why is the carbon solubility so different in ferrite vs austenite?
A phase diagram of Fe-C shows right away that austenite can withstand up to 2.14wt% C, whereas the solubility of C in ferrite is a measly 0.022wt% C. Why the big difference? Even more crazy, consider that ferrite is BCC which is only 68% densely packed while FCC is 74% packed. Why should t
From playlist Materials Sciences 101 - Introduction to Materials Science & Engineering 2020
Magnetism (4 of 13) Magnetic Field of a Wire, Calculations
Explains how to do simple calculations for the magnetic field generated by the current in a long straight wire. Three worked examples show you how to calculate the magnetic field strength, the amount of current flowing through the wire and the distance r from the wire. The magnetic field
From playlist Magnets, Magnetism and Charges in Magnetic Fields
Which of these metals will be attracted to a magnet ?
Ferromagnetic Elements: which metals from the periodic table experience strong attraction towards a magnet? Here are seven samples- 1 cm cubes of 99% pure elements: Ti (titanium), Fe (iron), Co (cobalt), Ni (nickel), Cu (copper), Gd (gadolinium), and W (tungsten)- which of these metals are
From playlist physicsfun PUZZLES, ILLUSIONS & CHALLENGES
Tiny Science - Amazing Incredible Ferrofluid
FerroFluid is an oil containing nano size iron particles. These iron particles are magnetic and when a magnet is brought towards the ferro fluid it does some amazing things and produces some wonderful effects. In this episode Jacob and Sam watch the ferro fluid ‘dance’ to some music as it
From playlist Lego Science Episodes
Fermi Inversion Factor Explained
https://www.patreon.com/edmundsj If you want to see more of these videos, or would like to say thanks for this one, the best way you can do that is by becoming a patron - see the link above :). And a huge thank you to all my existing patrons - you make these videos possible. In this video
From playlist Optoelectronic and Photonic Devices
Mod-09 Lec-23 Relaxor Ferroelectric
Advanced ceramics for strategic applications by Prof. H.S. Maiti,Department of Metallurgy and Material Science,IIT Kharagpur.For more details on NPTEL visit http://nptel.ac.in
From playlist IIT Kharagpur: Advanced Ceramics for Strategic Applications | CosmoLearning.org Materials Science
Mod-08 Lec-19 Ferroelectric , Piezoelectric and Pyroelectric Ceramics
Advanced ceramics for strategic applications by Prof. H.S. Maiti,Department of Metallurgy and Material Science,IIT Kharagpur.For more details on NPTEL visit http://nptel.ac.in
From playlist IIT Kharagpur: Advanced Ceramics for Strategic Applications | CosmoLearning.org Materials Science
C N R Rao - Multiferroic and Magnetoelectric Oxides
PROGRAM: The ICTS Condensed Matter Programme 2011 Venue: Indian Insitute of Science, Bangalore Date: Friday 09 Dec, 2011 - Thursday 22 Dec, 2011 DESCRIPTION: The ICTS Condensed Matter Programme 2011 (ICMP 2011) consists of a 10 day Winter School (December 9 to December 18) followed by a 4
From playlist The ICTS Condensed Matter Programme 2011
Mod-01 Lec-17 Dispersion and Absorption of Electromagnetic Waves in Dielectric Media, Ferro
Condensed Matter Physics by Prof. G. Rangarajan, Department of Physics, IIT Madras. For more details on NPTEL visit http://nptel.iitm.ac.in
From playlist NPTEL: Condensed Matter Physics - CosmoLearning.com Physics Course
Mod-08 Lec-20 Ferroelectric , Piezoelectric and Pyroelectric Ceramics (Contd.)
Advanced ceramics for strategic applications by Prof. H.S. Maiti,Department of Metallurgy and Material Science,IIT Kharagpur.For more details on NPTEL visit http://nptel.ac.in
From playlist IIT Kharagpur: Advanced Ceramics for Strategic Applications | CosmoLearning.org Materials Science
Reduction in Band Gap with Retention of Ferroelectricity through Heterovalent ... Rohit Kumar Rohj
DISCUSSION MEETING : APS SATELLITE MEETING AT ICTS ORGANIZERS : Ranjini Bandyopadhyay (RRI, India), Subhro Bhattacharjee (ICTS-TIFR, India), Arindam Ghosh (IISc, India), Shobhana Narasimhan (JNCASR, India) and Sumantra Sarkar (IISc, India) DATE & TIME: 15 March 2022 to 18 March 2022 VEN
From playlist APS Satellite Meeting at ICTS-2022
Mod-08 Lec-21 Ferroelectric , Piezoelectric and Pyroelectric Ceramics ( Contd.)
Advanced ceramics for strategic applications by Prof. H.S. Maiti,Department of Metallurgy and Material Science,IIT Kharagpur.For more details on NPTEL visit http://nptel.ac.in
From playlist IIT Kharagpur: Advanced Ceramics for Strategic Applications | CosmoLearning.org Materials Science
Mod-08 Lec-22 Ferroelectric , Piezoelectric and Pyroelectric Ceramics ( Contd.)
Advanced ceramics for strategic applications by Prof. H.S. Maiti,Department of Metallurgy and Material Science,IIT Kharagpur.For more details on NPTEL visit http://nptel.ac.in
From playlist IIT Kharagpur: Advanced Ceramics for Strategic Applications | CosmoLearning.org Materials Science
Electrical conductivity in materials and resistivity vs resistance
Electrical conductivity is the constant of proportionality for electrical transport in response to the driving force of an electric field. It's completely analogous to mass and thermal transport (diffusion coefficient and thermal conductivity) in this way. We must also differentiate betwee
From playlist Materials Sciences 101 - Introduction to Materials Science & Engineering 2020