Technicians in charge: Anna Crespi, Joan Esquius and F. Xavier Campos
Scientist in charge:  Jordi Rius

Scientific & Technical Services

X-Ray Diffraction

The aim of the X-Ray Diffraction (XRD) Service is the acquisition of diffraction data in order to obtain information on the crystal structure and the microstructure of the analyzed material allowing a better understanding of its properties. One important technical task of the Service is the improvement of X-ray diffraction data collection procedures, especially for thin film characterization, texture determination on layers, reflection and transmission microdiffraction, and qualitative analysis in capillary materials.

Scientific equipment available

  • Siemens D-5000: Identification and characterization of polycrystalline samples, including quantification, crystallinity estimation and crystal structure determination and
  • Bruker D8 Advance (GADDS) with VANTEC-500 area detector: Identification and characterization of powders and thin films: Texture measurements, reciprocal space mapping and microdiffraction analyses.
  • Bruker D8-Discover: X-Ray diffraction instrument for thin film characterization equipped with four motorized axes stage. Main applications in XR Reflectometry, Rocking measurements, RSM measurements and structural phase identification.
  • Bruker D8 Advance A25: In two different configurations: Bragg-Brentano geometry (flat sample holders) and Debye-Scherrer geometry (for samples included in capillaries and other measurements in transmission mode).
  • Software: For Powder Diffraction: PDF-4+ – ICDD database; Sieve+ – PDF-4+ Support Software (Search and Identify); EVA – Phase identification and quantitative phase analysis; TOPAS – Profile analysis, quantitative analysis, structure analysis. For Materials Research: MULTEX –Texture analysis; LEPTOS – Thin film analysis/Residual stress

Use of the Service in 2019

In 2019, 4,048 samples corresponding to 78 users from 27 research projects (amounting a total of 5,090 hours) were analyzed by the XRD Service. The principal users (listed in decreasing order of use) were the departments of Superconducting Materials and Large Scale Nanostructures, of Magnetic Materials and Functional Oxides, of Advanced Structural and Functional Characterization, of Solid State Chemistry and, finally, the Smart Molecular Inorganic and Hybrid Materials.

The external users during 2019 include various companies: Laboratorios Salvat, Laboratorios Rubió, Uriach and Applus and other research centers (ICFO, CNM, UAB).

Outreach, publications and projects in which the service has participated

The XRD service has played an active role in many science education activities, including the 16th edition of the “Argó programme”, the ESCOLAB school visits and the activity “Converteix-te en un detectiu de minerals” and “La taula periòdica i els minerals del teu mòbil” for primary school students for the Science Week. Moreover, the service has collaborated in the “2019 Expominer meeting” either organizing or co-organizing three workshops: “Minerals and the periodic table of chemical elements”, “Build your rock!” and “The minerals that make up your mobile phone” (November 2019, Fira de Barcelona).

Last year the XRD service attended the “4ª Reunión de Técnicos y Responsables de Servicios de Difracción” meeting organized by the “Grupo Especializado de Cristalografia y Crecimiento Cristalino” and contributed with the oral presentation of  Anna Crespi entitled “Aplicación de la microdifracción de rayos-X de laboratorio en el campo de la mineralogía y la ciencia de materiales”. Another relevant project has also been the participation of the Service in the NFFA project.

The service has participated in many publications and projects of the center, and is co-author of the following publication: On the Sensing Mechanisms of a Hydroresistive Flexible Film Based on an Organic Molecular Metal. Raphael Pfattner, Elena Laukhina, Laura Ferlauto, Fabiola Liscio, Silvia Milita, Anna Crespi, Victor Lebedev, Marta Mas-Torrent, Vladimir Laukhin, Concepció Rovira, and Jaume Veciana. ACS Applied Electronic Materials 2019 1 (9), 1781-1791.

Coordination
Anna May-Masnou This email address is being protected from spambots. You need JavaScript enabled to view it.
Redaction
Anna May-Masnou This email address is being protected from spambots. You need JavaScript enabled to view it.
Web & Graphic Editor
José Antonio Gómez  This email address is being protected from spambots. You need JavaScript enabled to view it.

Webmasters
José Antonio Gómez This email address is being protected from spambots. You need JavaScript enabled to view it.
Albert Moreno     This email address is being protected from spambots. You need JavaScript enabled to view it.
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