{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T17:44:38Z","timestamp":1760204678127,"version":"3.41.2"},"reference-count":7,"publisher":"AIP Publishing","issue":"17","content-domain":{"domain":["pubs.aip.org"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2014,5,7]]},"abstract":"<jats:p>We developed a highly sensitive magnetic tunnel junction (MTJ) based magnetic field sensor device with a magnetic field sensitivity of 1.29\u2009\u03a9\/\u03bcT. For this, more than 1000 microstructured linear MgO based MTJ pillars were fabricated and connected in series. By current biasing the MTJ sensor device under small AC external magnetic fields (\u03bc0HAC), a large AC output voltage proportional to \u03bc0HAC is induced. Carrying out noise spectral density measurements at such conditions, we demonstrate that our MTJ sensor device is able to detect magnetic fields down to 115\u2009pT\/Hz0.5 at frequencies fAC\u2009&amp;lt;\u2009200\u2009Hz in an unshielded environment without amplification of the MTJ AC output voltage.<\/jats:p>","DOI":"10.1063\/1.4859036","type":"journal-article","created":{"date-parts":[[2014,1,3]],"date-time":"2014-01-03T23:33:59Z","timestamp":1388792039000},"update-policy":"https:\/\/doi.org\/10.1063\/aip-crossmark-policy-page","source":"Crossref","is-referenced-by-count":42,"title":["Room temperature direct detection of low frequency magnetic fields in the 100 pT\/Hz0.5 range using large arrays of magnetic tunnel junctions"],"prefix":"10.1063","volume":"115","author":[{"given":"E.","family":"Paz","sequence":"first","affiliation":[{"name":"International Iberian Nanotechnology Laboratory (INL) , Braga, Portugal"}]},{"given":"S.","family":"Serrano-Guisan","sequence":"additional","affiliation":[{"name":"International Iberian Nanotechnology Laboratory (INL) , Braga, Portugal"}]},{"given":"R.","family":"Ferreira","sequence":"additional","affiliation":[{"name":"International Iberian Nanotechnology Laboratory (INL) , Braga, Portugal"}]},{"given":"P. P.","family":"Freitas","sequence":"additional","affiliation":[{"name":"International Iberian Nanotechnology Laboratory (INL) , Braga, Portugal"}]}],"member":"317","published-online":{"date-parts":[[2014,1,3]]},"reference":[{"key":"2023062217253311700_c1","doi-asserted-by":"publisher","first-page":"012054","DOI":"10.1088\/1742-6596\/303\/1\/012054","volume":"303","year":"2011","journal-title":"J. Phys.: Conf. Ser."},{"key":"2023062217253311700_c2","doi-asserted-by":"publisher","first-page":"211104","DOI":"10.1063\/1.2392722","volume":"89","year":"2006","journal-title":"Appl. Phys. Lett."},{"key":"2023062217253311700_c3","doi-asserted-by":"publisher","first-page":"4115","DOI":"10.1109\/TMAG.2012.2203297","volume":"48","year":"2012","journal-title":"IEEE Trans. Magn."},{"key":"2023062217253311700_c4","doi-asserted-by":"publisher","first-page":"07E931","DOI":"10.1063\/1.2839311","volume":"103","year":"2008","journal-title":"J. Appl. Phys."},{"key":"2023062217253311700_c5","doi-asserted-by":"publisher","first-page":"142407","DOI":"10.1063\/1.3701277","volume":"100","year":"2012","journal-title":"Appl. Phys. Lett."},{"key":"2023062217253311700_c6","doi-asserted-by":"publisher","first-page":"3719","DOI":"10.1109\/TMAG.2012.2200468","volume":"48","year":"2012","journal-title":"IEEE Trans. Magn."},{"key":"2023062217253311700_c7","doi-asserted-by":"publisher","first-page":"08K706","DOI":"10.1063\/1.2173636","volume":"99","year":"2006","journal-title":"J. Appl. Phys."}],"container-title":["Journal of Applied Physics"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/pubs.aip.org\/aip\/jap\/article-pdf\/doi\/10.1063\/1.4859036\/13375361\/17e501_1_online.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"syndication"},{"URL":"https:\/\/pubs.aip.org\/aip\/jap\/article-pdf\/doi\/10.1063\/1.4859036\/13375361\/17e501_1_online.pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,6,23]],"date-time":"2023-06-23T03:38:16Z","timestamp":1687491496000},"score":1,"resource":{"primary":{"URL":"https:\/\/pubs.aip.org\/jap\/article\/115\/17\/17E501\/138978\/Room-temperature-direct-detection-of-low-frequency"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2014,1,3]]},"references-count":7,"journal-issue":{"issue":"17","published-print":{"date-parts":[[2014,5,7]]}},"URL":"https:\/\/doi.org\/10.1063\/1.4859036","relation":{},"ISSN":["0021-8979","1089-7550"],"issn-type":[{"type":"print","value":"0021-8979"},{"type":"electronic","value":"1089-7550"}],"subject":[],"published-other":{"date-parts":[[2014,5,7]]},"published":{"date-parts":[[2014,1,3]]},"article-number":"17E501"}}