Fine Rare
Rare Earth Magnets: Great Strength In A Small Package
Rare Earth magnets are extremely strong magnets, which were first produced in the 1970s. The strength and power of these magnets makes them very useful for a wide range of applications. They can be found in some everyday items as well as in products that are more exotic. In this article, we will discuss some of the background of these magnets along with their current applications.
Not So Rare
You might assume from their name that these magnets are made from materials that are scarce or difficult to find. However, this is not so. In fact, many of the most popular Rare Earth materials are to be found in the Earth’s crust in similar quantities to lead and tin. Neither are the materials themselves particularly expensive. Certainly, they are not in the same league as gold or platinum. Their name comes not from the fact that they are scarce, exactly, but because they are distributed somewhat randomly, and are not generally found in large deposits. This makes mining them far more difficult.
Types Of Magnets
Two of the most popular types of rare Earth magnets are neodymium magnets and samarium-cobalt magnets. Of the two, neodymium magnets tend to be stronger for a given size. All of these magnet types can be somewhat impractical, however, as the materials used tend to be very brittle. As a result they tend to crack and break very easily, which is why they are usually coated in a different material for durability.
Applications
Extra-strong magnets are very useful in any situation in which size and weight are a concern. Compared to traditional magnets, neodymium or samarium-cobalt can offer the same strength at smaller sizes. This results in them being used in finely machined technological parts such as computer hard drives. They are also commonly used in musical applications, particular where high-fidelity performance is required. Some loudspeakers are built using neodymium magnets, and some electric guitar pickups use samarium-cobalt.
Several kinds of toy have also been produced. These often take the form of construction materials such as bricks or balls, which can be attached to each other using only magnetism. Rare Earth materials are particularly well suited to this task due to the strength-to-weight ratio required in a small but effective toy.
Summary
Despite their name, rare Earth magnets are not actually so rare, and the materials can be found in abundance in the Earth’s crust. They are still somewhat exotic, however, which have only become popular in the last few decades. Compared to regular magnets, their high strength allows them to excel in technological areas like computing, and their performance is so impressive that they are now being used in the latest hybrid and fully electric vehicles. Any time you want a strong magnet in a small space, neodymium or samarium-cobalt magnets are the optimal choice.
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Heldfond Book Gallery Ltd. – Fine and Rare Books
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Royal Albert 100 Years of Royal Albert Teacups and Saucers, Set of 5, 1900-1940 $202.98 As it embarks on a new century of fine china design, Royal Albert honors the artistic achievements of the one it has so faithfully chronicled with this stunning 100 Years of Royal Albert tribute collection. Employing classic shapes and delicate floral motifs, the 10-part series, which includes teaware, figurines, and brooches, recalls major British historical events and style trends from each deca… |
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Teavana Noble Poppy Bone China Tea Set $95.00 Teavana Exclusive. This sunshine yellow bone china tea set features a bright white interior and gold poppy flower edging. Yellow glaze is one of the most difficult colors to accomplish in bone china, which makes this tea set both rare and coveted…. |
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Mikasa Antique White 45-Piece Dinnerware Set, Service for 8 $199.90 HK400-045 Features: -45 Piece dinnerware set.-Uniquely-shaped.-Adding a touch of elegance to a traditional setting.-Coordinates perfectly with both formal and casual stemware and flatware.-Chip resistant.-Oven safe, freezer safe, microwave safe.-Material: Earthenware.-Cleaning and care: Dishwasher safe. Color/Finish: -White finish. Collection: -Antique White collection…. |
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Past Masters $10.26 BEATLES THE PAST MASTERS (EDICION LIMITADA) (2 CDS)… |
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Hard to Find 45s on CD, Volume 8: 70′s Pop Classics $12.06 All products are BRAND NEW and factory sealed. Fast shipping and 100% Satisfaction Guaranteed…. |
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Proud Mary: The Best of Ike & Tina Turner $4.92 23 Sue, Minit and Liberty tracks. Tiny light scuff on disc will not affect play…. |
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The Three Stooges Vol 8 Cash & Carry/No Census, No Feeling/Some More of Samoa $1.00 Plot Summary for Cash and Carry (1937) The stooges find a crippled boy and his sister living in their dumpyard shack. To raise money to pay for the little boys operation they buy a phony treasure map from a con man. Thinking the treasure is buried beneath an old house, the boys start digging and wind up in a US treasury vault where they are promptly arrested. The president (FDR) gives them amnest… |
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Rare Books #6 by Jennifer Kennard – 60W x 47H – Peel and Stick Wall Decal by Wallmonkeys $99.99 WallMonkeys wall graphics are printed on the highest quality re-positionable, self-adhesive fabric paper. Each order is printed in-house and on-demand. WallMonkeys uses premium materials & state-of-the-art production technologies. Our white fabric material is superior to vinyl decals. You can literally see and feel the difference. Our wall graphics apply in minutes and won’t damage your paint or l… |
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Curious George Wall Decal Room Decor 18 x 25 Oustanding quality – rich colors bring this decal to life on your walls! Decal is easy to move and reposition without harming the walls. For indoor use only…. |
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