Magnetic properties of Pr1-xGdxMn2Ge2 compounds

Kilic A., Kervan S., ÖZCAN Ş., Gencer A.

JOURNAL OF ALLOYS AND COMPOUNDS, cilt.370, sa.1-2, ss.47-52, 2004 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 370 Sayı: 1-2
  • Basım Tarihi: 2004
  • Doi Numarası: 10.1016/j.jallcom.2003.09.028
  • Dergi Adı: JOURNAL OF ALLOYS AND COMPOUNDS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.47-52
  • Anahtar Kelimeler: rare earth compounds, transition metal compounds, magnetically ordered materials, magnetic measurements, X-ray diffraction (XRD), differential scanning calorimetry (DSC), NEUTRON-DIFFRACTION, EXCHANGE INTERACTION, RMN2GE2 COMPOUNDS, SOLID-SOLUTION, SMMN2GE2, 0-LESS-THAN-OR-EQUAL-TO-X-LESS-THAN-OR-EQUAL-TO-1, TRANSITIONS, PRMN2GE2, GDMN2GE2, SYSTEM
  • Ankara Üniversitesi Adresli: Evet

Özet

The structure and magnetic properties of the Pr1-xGdxMn2Ge2 (0-0 less than or equal to x less than or equal to 1.0) compounds have been investigated by means of X-ray diffraction (XRD), differential scanning calorimetry (DSC) techniques and AC magnetic susceptibility measurements. All compounds crystallize in the ThCr2Si2-type structure with the space group I4/mmm. The lattice constants and the unit cell volume obey Vegard's law. Samples in this alloy system exhibit a crossover from ferromagnetic ordering for PrMn2Ge2 to antiferromagnetic ordering for GdMn2Ge2 as a function of Gd concentration x. At low temperatures, the rare earth sublattice also orders and reconfigures the ordering in the Mn sublattice. The results are summarized in the x-T magnetic phase diagram. (C) 2003 Elsevier B.V. All rights reserved.