Your browser doesn't support javascript.
loading
Cd-content and temperature dependences of hyperfine fields in CdxFe3-xO4.
Sato, W; Fujii, M; Konaka, M; Ito, T; Hirahara, H; Komatsuda, S; Taniguchi, A; Ohkubo, Y.
Affiliation
  • Sato W; Institute of Science and Engineering, Kanazawa University, Kanazawa, Ishikawa 920-1192, Japan. Electronic address: wsato@se.kanazawa-u.ac.jp.
  • Fujii M; Graduate School of Natural Science and Technology, Kanazawa University, Kanazawa, Ishikawa 920-1192, Japan.
  • Konaka M; School of Chemistry, Kanazawa University, Kanazawa, Ishikawa, 920-1192, Japan.
  • Ito T; Graduate School of Natural Science and Technology, Kanazawa University, Kanazawa, Ishikawa 920-1192, Japan.
  • Hirahara H; School of Chemistry, Kanazawa University, Kanazawa, Ishikawa, 920-1192, Japan.
  • Komatsuda S; Institute of Human and Social Sciences, Kanazawa University, Kanazawa, Ishikawa, 920-1192, Japan.
  • Taniguchi A; Institute for Integrated Radiation and Nuclear Science, Kyoto University, Kumatori, Osaka, 590-0494, Japan.
  • Ohkubo Y; Institute for Integrated Radiation and Nuclear Science, Kyoto University, Kumatori, Osaka, 590-0494, Japan.
Appl Radiat Isot ; 209: 111320, 2024 Jul.
Article in En | MEDLINE | ID: mdl-38677203
ABSTRACT
Cd-content and temperature dependences of hyperfine fields in CdxFe3-xO4 (0 ≤ x ≤ 0.5) were investigated by means of time-differential perturbed angular correlation spectroscopy with the 111Cd(←111In) probe. It was found that Cd2+ ions selectively occupy the tetrahedral A site in the spinel structure in all the range of the present Cd content x. The magnetic transition temperature TC becomes lower with increasing x due to the interference of the long-range ordering of Fe spins as a result of expansion of the lattice constants by Cd doping. The measurement of room-temperature hyperfine fields at different x shows that the supertransferred magnetic hyperfine field (SMHF) at the probe decreases as x increases in the range of 0 ≤ x ≤ 0.5. Isothermal measurements at 15 K revealed a contrastive phenomenon for the Cd contents up to x = 0.4 the SMHF becomes great with increasing x; however, this increasing trend of the SMHF turns to reduction at x = 0.46. These observations can be explained based on the effect of Cd doping on the antiferromagnetic coupling between Fe ions in the A and B sites.

Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: Appl Radiat Isot Journal subject: MEDICINA NUCLEAR / SAUDE AMBIENTAL Year: 2024 Document type: Article Country of publication: United kingdom

Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: Appl Radiat Isot Journal subject: MEDICINA NUCLEAR / SAUDE AMBIENTAL Year: 2024 Document type: Article Country of publication: United kingdom