The range of exchange interactions and curie temperature in La0.67-xBixCa0.33MnO3 compounds
Küçük Resim Yok
Tarih
2005
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
World Scientific Publ Co Pte Ltd
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Magnetic properties of Bi-3+-doped La0.67-xBiXCa0.33MnO3 (x = 0, 0.05, 0.1, 0.2) are investigated. Using the mean-field and ferromagnetic spin-wave theory at low temperatures, total exchange integrals and Curie temperatures are calculated in the range 0 <= x <= 0.2. Calculated values of T,, are in good agreement with those obtained by magnetic measurements. In addition, the total exchange integral decrease with Bi3+ shows the existence of canted ferromagnetic order in the samples, as observed in experimental results.
Açıklama
Anahtar Kelimeler
manganites, exchange interaction, spin wave, Curie temperature, mean-field theory, Bi doping
Kaynak
International Journal of Modern Physics B
WoS Q Değeri
Q4
Scopus Q Değeri
Q3
Cilt
19
Sayı
27
