지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2024.6
- 수록면
- 179 - 186 (8page)
- DOI
- 10.4283/JMAG.2024.29.2.179
이용수
초록· 키워드
오류제보하기
The electron magnetic resonance (EMR) of the paramagnetic Cr<SUP>3+</SUP> ion in an alexandrite single crystal (BeAl₂O₄:Cr<SUP>3+</SUP>) has been investigated. The resonance fields of Cr<SUP>3+</SUP> impurity ion measured with a Q-band electron magnetic resonance spectrometer were obtained under angular variation along crystallographic ab-, bc-, and ca-planes. The spectroscopic splitting parameters g<SUB>ij</SUB> and the 2<SUP>nd</SUP> order zero-field splitting parameters D<SUB>ij</SUB> of the Cr<SUP>3+</SUP>(II)-center at Al3+(II) site in an alexandrite single crystal with mirror symmetry are obtained by using the effective spin Hamiltonian. The EMR parameters and rotation patterns show that the actual local site symmetry of the Cr<SUP>3+</SUP> ion is monoclinic. The number of magnetic resonance signals and crystal structures were compared and analyzed in detail where impurity ions in a single crystal are replaced. It turns out that the Cr<SUP>3+</SUP> impurity ions in an alexandrite single crystal occupies the Al<SUP>3+</SUP>(II) site without charge compensation instead of the Be<SUP>2+</SUP> and Al<SUP>3+</SUP>(I) sites.
목차
1. Introduction
2. Experimental Aspects
3. Spin Hamiltonian Analysis
4. Discussion and Analysis
5. Conclusion
References
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