Scientists identify new magnetic element
New York, May 27: Scientists have demonstrated that the chemical element ruthenium (Ru) is the fourth single element to have unique magnetic properties at room temperature.
The researchers believe that the discovery, detailed in the journal Nature Communications, could be used to improve sensors, devices in the computer memory and logic industry, or other devices using magnetic materials.
"Magnetism is always amazing. It proves itself again. We are excited and grateful to be the first group to experimentally demonstrate and add the fourth ferromagnetic element at room temperature to the periodic table," said Jian-Ping Wang, Professor at University of Minnesota in the US and the corresponding author for the paper.
The use of ferromagnetism, or the basic mechanism by which certain materials (such as iron) form permanent magnets or are attracted to magnets, reaches back as far as ancient times when lodestone was used for navigation.
Since then only three elements on the periodic table have been found to be ferromagnetic at room temperature -- iron (Fe), cobalt (Co), and nickel (Ni). The rare earth element gadolinium (Gd) nearly misses by only 8 degrees Celsius.
Magnetic materials are very important in industry and modern technology and have been used for fundamental studies and in many everyday applications such as sensors, electric motors, generators, hard disk media, and most recently spintronic memories.
By using ultra-thin films to force the ferromagnetic phase, this new study demonstrated that Ru can be the fourth single element ferromagnetic material.
"It took us about two years to find a right way to grow this material and validate it. This work will trigger magnetic research community to look into fundamental aspects of magnetism for many well-known elements," Wang added.
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Rupee hits all-time low for second time in a week
Mumbai (PTI): The rupee depreciated 31 paise to settle at 91.99 against the US dollar on Wednesday, touching the lowest closing level for the second time in less than a week, amid increased month-end demand for the greenback.
Forex traders said the rupee opened higher as the US dollar index softened and a long-awaited trade breakthrough with Europe offered quiet reassurance. However, increased month-end demand for the American currency as well as the ongoing geopolitical tensions dented investors' sentiments.
At the interbank foreign exchange, the rupee opened at 91.60 and touched an early high of 91.50, but pared all the gains to touch an intra-day low of 91.99 against the greenback.
The domestic unit settled 31 paise down, revisiting its lowest-ever closing level of 91.99 against the greenback. The Indian currency previously ended at this level on January 23 when it also hit its all-time intraday low of 92 against the US dollar.
On Tuesday, the rupee rebounded from its all-time low levels and gained 22 paise to close at 91.68 against the US dollar.
Analysts said the rupee opened higher as the US dollar index softened and a long-awaited trade breakthrough with Europe bolstered investor sentiment.
India and the European Union on Tuesday announced the conclusion of negotiations for the free trade agreement (FTA), under which a number of domestic sectors such as apparel, chemicals and footwear will get duty-free entry into the 27-nation bloc, while the EU will get access to the Indian market at concessional duty for cars and wines, an official said.
The deal has been dubbed the "mother of all deals" as it will create a market of about 2 billion people.
Meanwhile, the dollar index, which gauges the greenback's strength against a basket of six currencies, was trading 0.07 per cent lower at 96.14.
Brent crude, the global oil benchmark, was trading 0.43 per cent lower at USD 67.28 per barrel in futures trade.
On the domestic equity market front, Sensex jumped 487.20 points to settle at 82,344.68, while Nifty surged 167.35 points to 25,342.75.
Foreign Institutional Investors turned net buyers and purchased equities worth Rs 480.26 crore on Wednesday, according to exchange data.
