Low‐Temperature Antiferromagnetic Resonance in αFe2O3

作者: S. Foner , S. J. Williamson

DOI: 10.1063/1.1714144

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摘要: Antiferromagnetic resonance (AFMR) at 35, 70, and 121 Gc/sec in single‐crystal synthetic natural αFe2O3 from 4.2° to 280°K has been observed. The usual low‐field AFMR as well the spin‐flop mode are observed with pulsed magnetic fields applied parallel c axis. data extend below spin reorientation transition temperature TM (about −10°C) above TM. joins smoothly canted high‐frequency terminates abruptly three modes here for first time require either high or frequencies both observation. effects of Dzyaloshinsky‐Moriya field HDM on resonance, AFMR, possible spontaneous sublattice magnetizations discussed.

参考文章(11)
Akira Tasaki, Shūichi Iida, Magnetic Properties of Synthetic Single Crystal of αFe2O3 Journal of the Physical Society of Japan. ,vol. 18, pp. 1148- 1154 ,(1963) , 10.1143/JPSJ.18.1148
J. O. Artman, J. C. Murphy, S. Foner, Magnetic Anisotropy in Antiferromagnetic α‐(Cr1−fAlf) 2O3 Journal of Applied Physics. ,vol. 36, pp. 986- 987 ,(1965) , 10.1063/1.1714290
H. J. Fink, D. Shaltiel, High-Frequency Resonance of A Weak Ferromagnet: MnCO 3 Physical Review. ,vol. 130, pp. 627- 631 ,(1963) , 10.1103/PHYSREV.130.627
N. Blum, A. J. Freeman, J. W. Shaner, L. Grodzins, Mössbauer Studies of Spin Flop in Antiferromagnetic Hematite Journal of Applied Physics. ,vol. 36, pp. 1169- 1170 ,(1965) , 10.1063/1.1714153
A.H. Morrish, G.B. Johnston, N.A. Curry, Magnetic transition in pure and Ga doped α-Fe2O3 Physics Letters. ,vol. 7, pp. 177- 178 ,(1963) , 10.1016/0031-9163(63)90372-X
Samuel J. Williamson, Simon Foner, Antiferromagnetic Resonance in Systems with Dzyaloshinsky-Moriya Coupling; Orientation Dependence inαFe2O3 Physical Review. ,vol. 136, pp. A1102- A1106 ,(1964) , 10.1103/PHYSREV.136.A1102
I. Dzyaloshinsky, A thermodynamic theory of “weak” ferromagnetism of antiferromagnetics Journal of Physics and Chemistry of Solids. ,vol. 4, pp. 241- 255 ,(1958) , 10.1016/0022-3697(58)90076-3
Simon Foner, High-Field Antiferromagnetic Resonance in Cr 2 O 3 Physical Review. ,vol. 130, pp. 183- 197 ,(1963) , 10.1103/PHYSREV.130.183
Masashi Tachiki, Takeo Nagamiya, Origin of the Magnetic Anisotropy Energy of Antiferromagnetic Cr 2 O 3 Journal of the Physical Society of Japan. ,vol. 13, pp. 452- 455 ,(1958) , 10.1143/JPSJ.13.452
P. Pincus, Theory of Magnetic Resonance inαFe2O3 Physical Review Letters. ,vol. 5, pp. 13- 15 ,(1960) , 10.1103/PHYSREVLETT.5.13