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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India to pursue extradition of Khalistani separatist Arsh Dalla with Canada following his arrest
New Delhi, Nov 14: India on Thursday said it will pursue an extradition request with Canada for Arsh Singh Gill alias Arsh Dalla, the de-facto chief of the Khalistan Tiger Force, following his arrest in that country.
Dalla was designated in India as a terrorist in 2023.
In July 2023, India had requested the Canadian government for his provisional arrest.
"In view of the recent arrest, our agencies will be following up on an extradition request," Ministry of External Affairs (MEA) spokesperson Randhir Jaiswal said.
"Given Arsh Dalla's criminal record in India and his involvement in similar illegal activities in Canada, it is expected that he will be extradited or deported to face justice in India," he added.
Dalla was reportedly arrested by the Canadian Police late last month.
"We have seen media reports circulating since November 10 on the arrest in Canada of proclaimed offender Arsh Singh Gill alias Arsh Dalla, the de-facto chief of the Khalistan Tiger Force," Jaiswal said.
"Canadian print and visual media have widely reported on the arrest. We understand that the Ontario Court has listed the case for hearing," he added.
Jaiswal was replying to media queries regarding the arrest of Dalla.
"Arsh Dalla is a proclaimed offender in over 50 cases of murder, attempt to murder, extortion and terrorist acts, including terror financing. In May 2022, a Red Corner Notice was issued against him," Jaiswal said.
"He was designated in India as an individual terrorist in 2023. In July 2023, the Government of India had requested the Canadian government for his provisional arrest. This was declined," he added.
Jaiswal said India had provided additional information in the case to the Canadian authorities.
"A separate request was also sent to Canada under the Mutual Legal Assistance Treaty (MLAT) to verify Arsh Dalla's suspected residential address, his financial transactions to India, moveable/immovable properties, details of mobile numbers etc - all of which were provided to Canadian authorities in January 2023," Jaiswal said.
"In December 2023, the Department of Justice of Canada sought additional information on the case. A reply to these queries was sent in March this year," he added.
Our response to media queries regarding the arrest of a designated terrorist in Canada:https://t.co/c6CasRuteb pic.twitter.com/XfH4S5UzUr
— Randhir Jaiswal (@MEAIndia) November 14, 2024
