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Coercivity and squareness enhancement in ball-milled hard magnetic-antiferromagnetic composites

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  • معلومة اضافية
    • الموضوع:
      2001
    • Collection:
      Universitat Autònoma de Barcelona: Dipòsit Digital de Documents de la UAB
    • نبذة مختصرة :
      This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. ; The room-temperature coercivity,HC, and squareness, MR/MS (remanence/saturation magnetizations), of permanent magnet,SmCo5powders have been enhanced by ball milling with antiferromagnetic NiO (with Néel temperature, TN=590 K). This enhancement is observed in the as-milled state. However, when the milling of SmCo5 is carried out with an antiferromagnet with TN below room temperature (e.g., for CoO, TN=290 K), the coercivity enhancement is only observed at low temperatures after field cooling through TN. The ferromagnetic-antiferromagnetic exchange coupling induced either by local heating during milling(SmCo5+NiO) or field cooling (SmCo5+CoO) is shown to be the origin of the HC increase.
    • File Description:
      application/pdf
    • ISSN:
      10773118
    • Relation:
      Applied physics letters; Vol. 79, Issue 8 (June 2001), p. 1142-1144; https://ddd.uab.cat/record/116264; urn:10.1063/1.1392308; urn:oai:ddd.uab.cat:116264; urn:recercauab:ARE-17826; urn:articleid:10773118v79n8p1142; urn:scopus_id:0035920989; urn:wos_id:000170429000024; urn:oai:egreta.uab.cat:publications/4f9628b1-2f5c-4f09-8403-3890470e6065
    • الدخول الالكتروني :
      https://ddd.uab.cat/record/116264
    • Rights:
      open access ; Tots els drets reservats. ; https://rightsstatements.org/vocab/InC/1.0/
    • الرقم المعرف:
      edsbas.C986ACA