Journal
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN
Volume 81, Issue 1, Pages -Publisher
PHYSICAL SOC JAPAN
DOI: 10.1143/JPSJ.81.014702
Keywords
magnetization; single-turn coil; ultra-high magnetic field; geometrically frustrated magnet; manganaite; low temperature
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We have developed a magnetization measurement technique for use in a vertically aligned single-turn coil. Compensation ratios of an order as high as 10(-4) were achieved by self-compensation in parallel twin-pickup coils without using the electronic compensation circuit mixing of the signal from an auxiliary coil. High performance cryogenics was employed with a liquid Helium container that was also manufactured to fit the system. The high-magnetic-field magnetization measurements were applied to a manganite Bi0.5Ca0.5MnO3 at room temperature, and also to a geometrically frustrated spinel oxide, CdCr2O4 at very low temperatures. Not only the transition field, but also the absolute value of the magnetization was shown to be evaluated within a 3% degree of accuracy in magnetic fields of up to 103 T by means of a 14-mm inner-diameter single-turn coil.
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