INVESTIGATION OF COGNITIVE STRUCTURES OF STUDENTS RELATED TO THE KEY CONCEPTS OF THE HEALTHCARE MANAGEMENT DEPARTMENT BY WORD ASSOCIATION TEST
Journal of Data Analysis, cilt.19, sa.2, ss.51-60, 2024 (Hakemli Dergi)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 19 Sayı: 2
- Basım Tarihi: 2024
- Doi Numarası: 10.6338/jda.202406_19(2).0007
- Dergi Adı: Journal of Data Analysis
- Sayfa Sayıları: ss.51-60
- Isparta Uygulamalı Bilimler Üniversitesi Adresli: Evet
Özet
Inelastic neutron scattering measurements demonstrate that the magnetic interactions in antiferromagnetic LaFeAsO are two-dimensional. Spin wave velocities within the Fe layer and the magnitude of the spin gap are similar to the \textit{A}Fe$_2$As$_2$ based materials. However, the ratio of interlayer and intralayer exchange is found to be less than $\sim 10^{-4}$ in LaFeAsO, very similar to the cuprates, and $\sim$ 100 times smaller than that found in \textit{A}Fe$_2$As$_2$ compounds. The results suggest that the effective dimensionality of the magnetic system is highly variable in the parent compounds of the iron arsenides and weak 3-D interactions may limit the maximum attainable superconducting $T_{c}$.