Latest Ferromagnetic materials Stories

2010-09-21 20:33:46

Research is closing in on the next-generation of ultra-high-density magneto-optical storage devices that could store more than 6,000 Terabits (6 petabits) of data, more than 70 times the contents of the entire U.S. Library of Congress, on a single 5-inch disc. Yet the vast storage amount is limited by the ability to write data quickly enough to the device. In the Journal of Applied Physics, researchers at Sun Yat-Sen University in China have demonstrated a way to record on ferromagnetic films...

2010-08-17 16:03:49

Breakthrough paves way to store and process information in novel spin-electronics Processing large amounts of information in today's electronics requires large amounts of power, which results in heating. Heat can ruin modern electronics by potentially damaging the stuff that makes them work--the ever smaller and denser structures in a computer's "brain," the microprocessor that incorporates all of its logic functions. So, researchers have been investigating something called "spintronics," a...

2010-06-10 13:01:37

After running a series of complex computer simulations, researchers have found that flaws in the structure of magnetic nanoscale wires play an important role in determining the operating speed of novel devices using such nanowires to store and process information. The finding*, made by researchers from the National Institute of Standards and Technology (NIST), the University of Maryland, and the University of Paris XI, will help to deepen the physical understanding and guide the...

2010-03-24 08:51:22

UCLA team couples quantum dots, silicon for room-temperature functionality As the electronics industry works toward developing smaller and more compact devices, the need to create new types of scaled-down semiconductors that are more efficient and use less power has become essential. In a study to be published in the April issue of Nature Materials (currently available online), researchers from UCLA's Henry Samueli School of Engineering and Applied Science describe the creation of a new...

2010-03-17 09:30:43

Speaking before a House Subcommittee, a distinguished U.S. scientist demonstrated how increased rare-earth research and development could create new multi-billion-dollar industries Karl A. Gschneidner Jr., a senior metallurgist at the U.S. Department of Energy's Ames Laboratory, today cautioned members of a Congressional panel that "rare-earth research in the USA on mineral extraction, rare-earth separation, processing of the oxides into metallic alloys and other useful forms, substitution,...

2010-02-09 09:48:08

Researchers in Chicago and London have developed a method for controlling the properties of magnets that could be used to improve the storage capacity of next-generation computer hard drives. Magnets that can readily switch their polarity are widely used in the computer industry for data storage, but they present an engineering challenge: A magnet's polarity must be easily switched when writing data to memory, but be difficult to switch when storing or reading it. These conflicting...

2010-01-12 08:27:00

LONDON, January 12 /PRNewswire/ -- - Roskill Information Services - Nickel: Market Outlook to 2014 (12th Edition, 2010) The fallout from the financial crisis that afflicted the world economy has seen nickel prices fluctuate wildly. LME prices peaked at just over US$52,000/t in May 2007, on the back of strong demand and low stocks, but had fallen by over 80% by the end of 2008, as demand collapsed. By the fourth quarter of 2009, however, prices had recovered to US$18,500/t....

2009-11-30 09:11:00

NEW YORK, Nov. 30 /PRNewswire/ -- Reportlinker.com announces that a new market research report is available in its catalogue: Magnetic Materials - A Worldwide Market Review http://www.reportlinker.com/p0164539/Magnetic-Materials---A-Worldwide-Market-Review.html Magnetic materials are ubiquitous in the present electronic-based economy. Nations around the world have shown consistent interest in the use of magnetic materials in a varied range of temperature and environmental conditions....

2009-11-19 19:42:37

Much of our planet's mineral wealth was deposited billions of years ago when Earth's chemical cycles were different from today's. Using geochemical clues from rocks nearly 3 billion years old, a group of scientists including Andrey Bekker and Doug Rumble from the Carnegie Institution have made the surprising discovery that the creation of economically important nickel ore deposits was linked to sulfur in the ancient oxygen-poor atmosphere. These ancient ores -- specifically iron-nickel...

2009-10-27 12:05:00

SAN FRANCISCO, Oct. 27 /PRNewswire-USNewswire/ -- Ghosts and goblins aren't the only spooky things lurking around this Halloween. A new report by the Campaign for Safe Cosmetics reveals that popular children's face paints contain lead, a potent neurotoxin, as well as nickel, cobalt and chromium, which can cause lifelong skin sensitization and contact dermatitis. Creepier yet, these metals were not listed on any of the product labels, so parents have no way of knowing what children are...

Latest Ferromagnetic materials Reference Libraries

2005-05-26 11:18:13

Cobalt is a chemical element in the periodic table that has the symbol Co and atomic number 27. Notable characteristics Cobalt is a hard ferromagnetic silver-white element. The Curie temperature is of 1388 K with 1.6~1.7 Bohr magnetons per atom. It is frequently associated with nickel, and both are characteristic ingredients of meteoric iron. Mammals require small amounts of cobalt salts. Cobalt-60, an artificially produced radioactive isotope of cobalt, is an important radioactive...

2005-05-26 09:37:09

Limonite Limonite is a ferric hydrate of varying composition, the generic formula is frequently written as FeO(OH)·nH2O, although this is not entirely accurate as Limonite often contains a varying amount of oxide compared to hydroxide. Together with hematite, it is mined as ore for the production of iron. Limonite is heavy and yellowish-brown. It is not a true mineral, however, but a mixture of similar hydrated iron oxide minerals, mostly Goethite. Limonite forms mostly in or near...

2005-05-26 09:20:28

Magnetite is a magnetic mineral form of both iron(II) oxide and iron(III) oxide or (iron(II,III) oxide), with chemical formula Fe3O4, one of several iron oxides and a member of the spinel group. Magnetite is the most magnetic of all the minerals on Earth, and these magnetic properties led to lodestone being used as an early form of magnetic compass. Small grains of magnetite occur in almost all igneous rocks and metamorphic rocks as well as many sedimentary rocks. Magnetite is a...

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Word of the Day
  • The navel or umbilicus.
  • In Greek archaeology: A central boss, as on a shield, a bowl, etc.
  • A sacred stone in the temple of Apollo at Delphi, believed by the Greeks to mark the 'navel' or exact center-point of the earth.
'Omphalos' comes from the ancient Greek.