Featured Research

from universities, journals, and other organizations

Arizona State University Professor Finds New Twist To Old Theory Of Magnetism

Date:
November 20, 2000
Source:
Arizona State University
Summary:
Physics and Astronomy professor Ralph V. Chamberlin has found a new twist to an old theory of magnetism. By using a novel application of thermodynamics, Chamberlin successfully extended the range of the mean-field theory of ferromagnetism to accurately describe the behavior of ferromagnetic materials across a broader range of temperatures.

Tempe, AZ -- Physics and Astronomy professor Ralph V. Chamberlin has found a new twist to an old theory of magnetism. By using a novel application of thermodynamics, Chamberlin successfully extended the range of the mean-field theory of ferromagnetism to accurately describe the behavior of ferromagnetic materials across a broader range of temperatures.

Related Articles


The mean-field theory of ferromagnetism, created in 1907 by Pierre Weiss, was an important milestone in the development of modern physics. It describes the properties of strongly magnetic materials, such as iron, but had an impact far beyond magnet research.

"Mean-field theory was the first viable model for ferromagnetism. Although its predictions near the transitional temperature have been found to be inaccurate, it remains popular as the most versatile approach for describing many different properties in a wide-range of materials," said Chamberlin.

For the past 30 years, an alternative theory has been used for the behavior near the transition. Chamberlin's groundbreaking research shows that the mean-field theory can be extended down to the transition so there is no need for a separate theory.

The mean-field approach can, in fact, describe the behavior of ferromagnets in this regime, as well as higher temperatures. "This becomes possible by including the effect of small, nanometer-sized clusters in the sample," he says.

The long history of the mean-field theory and the implications of Chamberlin's findings are discussed in an accompanying Nature News and Views article by Tom Giebultowicz of Oregon State University.

The research is published in the November 16, 2000 issue of Nature.


Story Source:

The above story is based on materials provided by Arizona State University. Note: Materials may be edited for content and length.


Cite This Page:

Arizona State University. "Arizona State University Professor Finds New Twist To Old Theory Of Magnetism." ScienceDaily. ScienceDaily, 20 November 2000. <www.sciencedaily.com/releases/2000/11/001120074015.htm>.
Arizona State University. (2000, November 20). Arizona State University Professor Finds New Twist To Old Theory Of Magnetism. ScienceDaily. Retrieved November 26, 2014 from www.sciencedaily.com/releases/2000/11/001120074015.htm
Arizona State University. "Arizona State University Professor Finds New Twist To Old Theory Of Magnetism." ScienceDaily. www.sciencedaily.com/releases/2000/11/001120074015.htm (accessed November 26, 2014).

Share This


More From ScienceDaily



More Matter & Energy News

Wednesday, November 26, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

NASA's First 3-D Printer In Space Creates Its First Object

NASA's First 3-D Printer In Space Creates Its First Object

Newsy (Nov. 26, 2014) The International Space Station is now using a proof-of-concept 3D printer to test additive printing in a weightless, isolated environment. Video provided by Newsy
Powered by NewsLook.com
Bolivian Recycling Initiative Turns Plastic Waste Into School Furniture

Bolivian Recycling Initiative Turns Plastic Waste Into School Furniture

Reuters - Innovations Video Online (Nov. 26, 2014) Innovative recycling project in La Paz separates city waste and converts plastic garbage into school furniture made from 'plastiwood'. Tara Cleary reports. Video provided by Reuters
Powered by NewsLook.com
Blu-Ray Discs Getting Second Run As Solar Panels

Blu-Ray Discs Getting Second Run As Solar Panels

Newsy (Nov. 26, 2014) Researchers at Northwestern University are repurposing Blu-ray movies for better solar panel technology thanks to the discs' internal structures. Video provided by Newsy
Powered by NewsLook.com
Today's Prostheses Are More Capable Than Ever

Today's Prostheses Are More Capable Than Ever

Newsy (Nov. 26, 2014) Advances in prosthetics are making replacement body parts stronger and more lifelike than they’ve ever been. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Space & Time

Matter & Energy

Computers & Math

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins