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
- 2014.6
- 수록면
- 126 - 129 (4page)
이용수
초록· 키워드
오류제보하기
We report the crystallographic and magnetic properties of Ni<SUB>0.3</SUB>Fe<SUB>0.7</SUB>Ga₂S₄ by means of X-ray diffractometer (XRD), a superconducting quantum interference device (SQUID) magnetometer, and a Mossbauer spectroscopy. In particular, Ni<SUB>0.3</SUB>Fe<SUB>0.7</SUB>Ga₂S₄ was studied by Mossbauer analysis for evidence of spin reorientation. The chalcogenide material Ni<SUB>0.3</SUB>Fe<SUB>0.7</SUB>Ga₂S₄ was fabricated by a direct reaction method. XRD analysis confirmed that Ni<SUB>0.3</SUB>Fe<SUB>0.7</SUB>Ga₂S₄ has a 2-dimension (2-D) triangular lattice structure, with space group P-3m1. The Mossbauer spectra of Ni<SUB>0.3</SUB>Fe<SUB>0.7</SUB>Ga₂S₄ at spectra at various temperatures from 4.2 to 300 K showed that the spectrum at 4.2 K has a severely distorted 8-line shape, as spin liquid. Electric quadrupole splitting, EQ has anomalous twopoints of temperature dependence of EQ curve as freezing temperature, T<SUB>f</SUB> = 11 K, and Neel temperature, T<SUB>N</SUB> = 26 K. This suggests that there appears to be a slowly-fluctuating “spin gel” state between T<SUB>f</SUB> and T<SUB>N</SUB>, caused by non-paramagnetic spin state below T<SUB>N</SUB>. This comes from charge re-distribution due to spin-orientation above T<SUB>f</SUB>, and T<SUB>N</SUB>, due to the changing EQ at various temperatures. Isomer shift value (0.7 mm/s ≤ δ ≤ 0.9 mm/s) shows that the charge states are ferrous (Fe<SUP>2+</SUP>), for all temperature range. The Debye temperature for the octahedral site was found to be Θ<SUB>D</SUB> = 260 K.
목차
1. Introduction
2. Experimental Details
3. Results and Discussion
4. Conclusions
References
참고문헌 (16)
참고문헌 신청
1. [학술지(정기간행물)] - A. P. Ramirez / 1997 / / Nature 386 : 156 ~
2. [학술지(정기간행물)] - Chun-Yeol You / 2008 / Enhancement of Magneto-optical Kerr Effect Signal from the Nanostructure by Employing Anti-reflection Coated Substrate / Journal of Magnetics 13 (2) : 70 ~ 75
3. [학술지(정기간행물)] - K. Ohgushi / 2005 / / Phys. Rev. B 72 : 155114 ~
4. [학술지(정기간행물)] - P. G. Radaelli / 2002 / / Nature 416 : 155 ~
5. [학술지(정기간행물)] - S. Nakatsuji / 2005 / / Science 309 : 1697 ~
2. [학술지(정기간행물)] - Chun-Yeol You / 2008 / Enhancement of Magneto-optical Kerr Effect Signal from the Nanostructure by Employing Anti-reflection Coated Substrate / Journal of Magnetics 13 (2) : 70 ~ 75
3. [학술지(정기간행물)] - K. Ohgushi / 2005 / / Phys. Rev. B 72 : 155114 ~
4. [학술지(정기간행물)] - P. G. Radaelli / 2002 / / Nature 416 : 155 ~
5. [학술지(정기간행물)] - S. Nakatsuji / 2005 / / Science 309 : 1697 ~
이 논문의 저자 정보
이 논문과 함께 이용한 논문
최근 본 자료
댓글(0)
0