μSR Measurements of the Magnetism of Sr3Fe2O7

13th International Conference on Muon Spin Rotation, Relaxation and Resonance

Macfarlane, W.A.^1 ; Peets, D.C.^2,7 ; Buck, T.^3 ; Chow, K.H.^4 ; Cortie, D.L.^1,3 ; Jain, A.^2 ; Pomerantz, C.^5 ; Tschense, C.B.L.^5,6 ; Wang, D.^3 ; Keimer, B.^2

Chemistry Department, University of British Columbia, Vancouver

BC

V6T 1Z1, Canada^1

Max-Planck-Institut für Festkörperforschung, Stuttgart

D-70569, Germany^2

Department of Physics, University of British Columbia, Vancouver

BC

V6T 1Z1, Canada^3

Department of Physics, University of Alberta, Edmonton

AB

T6G 2E1, Canada^4

TRIUMF, Vancouver

BC

V6T 2A3, Canada^5

Department of Inorganic Chemistry, University of Bayreuth, Bayreuth

D-95440, Germany^6

IBS-CCES, Seoul National University, Gwanak-ro 1, Gwanak-gu, Seoul

151-747, Korea, Republic of^7

关键词: High quality single crystals;    Incommensurate phase;    Internal field;    Magnetic transitions;    Measurements of;    Paramagnetic state;    Precession frequency;    Transverse field;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/551/1/012001/pdf
DOI  :  10.1088/1742-6596/551/1/012001

来源: IOP

【 摘 要 】

We present a preliminary report of zero and transverse field μSR measurements in a high quality single crystal of fully oxygenated Sr3Fe2O7[1], the insulating 3d magnetic analogue of the well studied Sr3Ru2O7, in its charge-disproportionated state, through the magnetic transition to the incommensurate phase at TN ∼ 115 K. A very broad distribution of static fields below Tn yields a large (2/3) missing fraction. Rapidly damped zero field oscillations indicate a large internal field at the muon, estimated to be 0.46 T at 0 K. In the paramagnetic state, we find two muon precession frequencies at 0.25 T applied field, reminiscent of the Mössbauer spectra.