High-speed 100 MHz strain monitor using fiber Bragg grating and optical filter for magnetostriction measurements under ultrahigh magnetic fields

Abstract

A high-speed 100 MHz strain monitor using a fiber Bragg grating, an optical filter, and a mode-locked optical fiber laser has been devised, which has a resolution of $\Delta L/L\sim 10^{-4}$. The strain monitor is sufficiently fast and robust for the magnetostriction measurements of magnetic materials under ultrahigh magnetic fields generated with destructive pulse magnets, where the sweep rate is in the range of 10-100 T/$\mu$s. As a working example, the magnetostriction of LaCoO${}_3$ was measured at room temperature, 115 K, and 7$\sim$4.2 K up to a maximum magnetic field of 150 T. The smooth $B^2$ dependence and the first-order transition were observed at 115 K and 7$\sim$4.2 K, respectively, reflecting the field-induced spin-state evolution.

5 pages, 2 figures

References in corpus (9)

• Excitonic condensation in systems of strongly correlated electrons
• High resolution magnetostriction measurements in pulsed magnetic fields using Fibre Bragg Gratings
• Spin state ordering of strongly correlating LaCoO${}_3$ induced at ultrahigh magnetic fields
• Phase diagram and collective excitation in excitonic insulator: from the orbital physics viewpoint
• A cascade of magnetic field induced spin transitions in LaCoO3
• Field-induced exciton condensation in LaCoO3
• Magnetic field effects in a correlated electron system with spin-state degree of freedom - Implication of an excitonic insulator -
• Mechanism of spin crossover in LaCoO3 resolved by shape magnetostriction in pulsed magnetic fields
• Magnetic-field-induced spin crossover of Y-doped Pr${}_{0.7}$Ca${}_{0.3}$CoO${}_3$

Cited by in corpus (20)

• Unveiling new quantum phases in the Shastry-Sutherland compound SrCu2(BO3)2up to the saturation magnetic field
• Signature of spin-triplet exciton condensations in LaCoO${}_3$ at ultrahigh magnetic fields up to 600 T
• Two Spin-State Crystallizations in LaCoO${}_3$
• Capacitive detection of magnetostriction, dielectric constant, and magneto-caloric effects in pulsed magnetic fields
• Note: Optical filter method for high-resolution magnetostriction measurement using fiber Bragg grating under millisecond-pulsed high magnetic fields at cryogenic temperatures
• Generating 77 T using a portable pulse magnet for single shot quantum beam experiments
• Magnetoelastic couplings in the deformed Kagomé quantum spin lattice of volborthite
• Signatures of a magnetic superstructure phase induced by ultrahigh magnetic fields in a breathing pyrochlore antiferromagnet
• A concise 40 T pulse magnet for condensed matter experiments
• Single shot x-ray diffractometry in SACLA with pulsed magnetic fields up to 16 T
• A review on magnetic field induced spin crossover in LaCoO${}_3$ up to 600 T
• Magnetoelastic standing waves induced in UO${}_2$ by microsecond magnetic field pulses
• 100 MHz high-speed strain monitor using fiber Bragg grating and optical filter applied for magnetostriction measurements of cobaltite at magnetic fields beyond 100 T
• Physical properties of liquid oxygen under ultrahigh magnetic fields
• Crystal-field magnetostriction of the spin ice under ultrahigh magnetic fields
• X-ray free-electron laser observation of giant and anisotropic magnetostriction in $\beta$-O${}_2$ at 110 Tesla
• Magnetic field induced valence change in Eu(Co${}_{1-x}$Ni${}_x$)${}_2$P${}_2$ up to 60 T
• Magnetostriction studies up to megagauss fields using fiber Bragg grating technique
• Vector pulse magnet
• Search for magnetoacoustic quantum oscillations in the insulating phase of YbB${}_{12}$