Resumen: The results from direct and indirect determinations of the magnetocaloric parameters of Mn0.99Co0.01As have been analyzed. The isothermal entropy change (Delta ST) due to external magnetic field changes has been determined through direct measurements of the heat absorbed by the sample when the field is removed under isothermal conditions. It has also been calculated from isothermal magnetization and isofield heat capacity measurements. In addition to that, the adiabatic temperature change (Delta TS) has been obtained from direct measurements and from isofield heat capacity measurements. The different results of both Delta ST and Delta TS are compared. Due to the presence of a first-order phase transition, the studied sample exhibits giant magnetocaloric effect at room temperature. The observed maximum values, -Delta ST,max = 32.1 J/kg·K and Delta TS,max = 17.7 K for a field change from 0 to 6 T, suggest that the Co-doped MnAs compounds are promising candidates for the preparation of useful materials for magnetic refrigeration near room temperature. Idioma: Inglés DOI: 10.1051/epjconf/20147504003 Año: 2014 Publicado en: EPJ web of conferences 75 (2014), 04003 [4 pp] ISSN: 2101-6275 Financiación: info:eu-repo/grantAgreement/ES/MICINN/CSD2007-00010 Financiación: info:eu-repo/grantAgreement/ES/MICINN/MAT2007-61621 Tipo y forma: Article (Published version) Área (Departamento): Física de la Materia Condensada (Departamento de Física de la Materia Condensada)