** Shares of Australia's Archer Materials rise as much as 13.7% to A$0.290, its biggest intraday pct gain since Aug 1
** Semiconductor technology company signs agreement with China-based MultiDimension Technology
** Agreement is to develop a tunnel magnetoresistance sensor for commercial use in industrial applications
** 799,362 shares change hands, vs 30-day average volume of 455,782 shares
** Stock has fallen 25% YTD, as of 0013 GMT
(Reporting by Roshan Thomas in Bengaluru)
((Roshan.Thomas@thomsonreuters.com))