News Column

Study Results from Singapore National University Update Understanding of Materials Science

June 27, 2014

By a News Reporter-Staff News Editor at Science Letter -- New research on Science is the subject of a report. According to news originating from Singapore, Singapore, by NewsRx correspondents, research stated, "The effects of sputter growth conditions of Ru-SiO2 under-layer (hereafter referred as Ru-t layer) on the microstructure of this layer were studied. The effects of growth conditions of the Ru-t layer on the microstructure and magnetic properties of the Co72Pt28-SiO2 top layer were further investigated."

Our news journalists obtained a quote from the research from Singapore National University, "Results show that increasing SiO2 content in the Ru-t layer deteriorates slightly the texture of Ru grains in this layer generally. The high-pressure (1.3Pa) deposition can better protect the texture of Ru than low-pressure (0.4Pa) deposition with SiO2 addition. Furthermore, high-pressure deposition of Ru-t layer with low SiO2 content produces better texture of Co72Pt28 than low pressure. The sizes of Ru grains and Co72Pt28 grains decrease with increasing SiO2 content. A high-pressure deposition of Ru-t layer further reduces the grain size of Co72Pt28. Both the coercivity and the remanence ratio of Co72Pt28 layer decrease when SiO2 content in the Ru-t layer exceeds 10 vol.%. High-pressure deposition of Ru-t layer results in a higher coercivity and remanence ratio of Co72Pt28 layer than those with low-pressure depositions."

According to the news editors, the research concluded: "The above results show that the grain size of Co72Pt28 can be reduced without sacrificing its magnetic properties at small SiO2 content."

For more information on this research see: Growth of Ru-SiO2 underlayer for Co72Pt28-SiO2 nanocomposite films. Physica Status Solidi A-Applications and Materials Science, 2014;211(5):1162-1167. Physica Status Solidi A-Applications and Materials Science can be contacted at: Wiley-V C H Verlag Gmbh, Boschstrasse 12, D-69469 Weinheim, Germany (see also Science).

The news correspondents report that additional information may be obtained from R.J. Tang, Singapore National University, Dept. of Mat Sci & Engn, Singapore 117576, Singapore.

Keywords for this news article include: Asia, Science

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Source: Science Letter

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