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The magnetic moments fulfil the Slater\u2013Pauling rule and the Curie temperatures are well above room temperature. All compounds show a metallic-like resistivity for low temperatures up to their Curie temperature, above the resistivity changes to semiconducting-like behaviour. A large negative magnetoresistance (MR) of 55 per cent is observed for Co2TiSn at room temperature in an applied magnetic field of \u03bc0H=4T, which is comparable to the large negative MRs of the manganites. The Seebeck coefficients are negative for all three compounds and reach their maximum values at their respective Curie temperatures and stay almost constant up to 950\u2009K. The highest value achieved is \u221252\u2009\u03bcVK\u22121 for Co2TiSn, which is large for a metal. The combination of half-metallicity and the constant large Seebeck coefficient over a wide temperature range makes these compounds interesting materials for thermoelectric applications and further spincaloric investigations.<\/jats:p>","DOI":"10.1098\/rsta.2011.0183","type":"journal-article","created":{"date-parts":[[2011,8,22]],"date-time":"2011-08-22T03:28:21Z","timestamp":1313983701000},"page":"3588-3601","update-policy":"https:\/\/doi.org\/10.1098\/crossmark-policy","source":"Crossref","is-referenced-by-count":64,"title":["Anomalous transport properties of the half-metallic ferromagnets Co2TiSi, Co2TiGe and Co2TiSn"],"prefix":"10.1098","volume":"369","author":[{"given":"Joachim","family":"Barth","sequence":"first","affiliation":[{"name":"Institut f\u00fcr Anorganische und Analytische Chemie, and Johannes Gutenberg-Universit\u00e4t, 55099 Mainz, Germany 1"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Gerhard H.","family":"Fecher","sequence":"additional","affiliation":[{"name":"Institut f\u00fcr Anorganische und Analytische Chemie, and Johannes Gutenberg-Universit\u00e4t, 55099 Mainz, Germany 1"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Benjamin","family":"Balke","sequence":"additional","affiliation":[{"name":"Institut f\u00fcr Anorganische und Analytische Chemie, and Johannes Gutenberg-Universit\u00e4t, 55099 Mainz, Germany 1"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tanja","family":"Graf","sequence":"additional","affiliation":[{"name":"Institut f\u00fcr Anorganische und Analytische Chemie, and Johannes Gutenberg-Universit\u00e4t, 55099 Mainz, Germany 1"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Andrey","family":"Shkabko","sequence":"additional","affiliation":[{"name":"EMPA, Swiss Federal Laboratories for Materials Testing and Research, Solid State Chemistry and Catalysis, 8600 Duebendorf, Switzerland 3"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Anke","family":"Weidenkaff","sequence":"additional","affiliation":[{"name":"EMPA, Swiss Federal Laboratories for Materials Testing and Research, Solid State Chemistry and Catalysis, 8600 Duebendorf, Switzerland 3"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Peter","family":"Klaer","sequence":"additional","affiliation":[{"name":"Institut f\u00fcr Physik, Johannes Gutenberg-Universit\u00e4t, 55099 Mainz, Germany 2"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Michael","family":"Kallmayer","sequence":"additional","affiliation":[{"name":"Institut f\u00fcr Physik, Johannes Gutenberg-Universit\u00e4t, 55099 Mainz, Germany 2"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hans-Joachim","family":"Elmers","sequence":"additional","affiliation":[{"name":"Institut f\u00fcr Physik, Johannes Gutenberg-Universit\u00e4t, 55099 Mainz, Germany 2"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hideki","family":"Yoshikawa","sequence":"additional","affiliation":[{"name":"National Institute for Materials Science, SPring-8, Hyogo 679-5148, Japan 4"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shigenori","family":"Ueda","sequence":"additional","affiliation":[{"name":"National Institute for Materials Science, SPring-8, Hyogo 679-5148, Japan 4"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Keisuke","family":"Kobayashi","sequence":"additional","affiliation":[{"name":"National Institute for Materials Science, SPring-8, Hyogo 679-5148, Japan 4"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Claudia","family":"Felser","sequence":"additional","affiliation":[{"name":"Institut f\u00fcr Anorganische und Analytische Chemie, and Johannes Gutenberg-Universit\u00e4t, 55099 Mainz, Germany 1"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"175","reference":[{"key":"2025123021201460500_RSTA20110183C1","doi-asserted-by":"publisher","first-page":"668","DOI":"10.1002\/anie.200601815","article-title":"Spintronics: a challenge for materials science and solid-state chemistry","volume":"46","author":"Felser,","year":"2007","journal-title":"Angew. 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