PPMS Ultrasonic elastic constant measurement option (English page) （製品詳細）

PPMS Ultrasonic elastic constant measurement option (English page)

Quantum Design Japan introduces PPMS Ultrasonic Option developed as co-development work with Iwate University, Japan. The Ultrasonic Option can measure elastic constant by using ultrasound.

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High accurate measurement ( 1ppm sound velocity change )

Two measurement methods for elastic constant measurements

Phase Comparison Method
* High accuracy measurement for slow sound velocity change according to temperature and magnetic field.

Orthogonal Phase Detection Experimental Method (ORPHEUS)
* High speed measurement (0.1 millisecond)
* For large sound velocity change according to temperature and magnetic field
* For transient sound velocity change

Easy sample setting using cartridge-type sample holder

All operation via PC with TCP/IP interface

* Setting frequency, repetition rate, pulse width, amplitude , gate position
* Remote control and monitoring possible by PC or Tablet through internet

Specification

Main Controller

Measured physical quantities	Sound velocity (Longitudinal and Transverse) Ultrasonic attenuation coefficient
Ultrasonic generator	Pulse method Frequency:10MHz to 160MHz Pulse width: > 0.05 microsecond Repeat cycle : 500Hz to 50 kHz
Absolute velocity measurement method	Pulse echo period detection method Phase rotation method ( Frequency scan method )
Velocity change measurement method	Phase Comparison Method Orthogonal Phase Detection Experimental Method (ORPHEUS)
PC interface	TCP/IP

Cartridge type sample rod with transducer

Measurement method	Transmission method /Reflection method
Piezo-electric transducer	LiNbO3
Fundamental Frequency	Longitudinal : 36MHz Transverse : 18MHz According to sample status, odd harmonic of the fundamental ultrasonic wave possible
Sample size	1mm to 10mm

Application software

Requirement	National Instruments’ LabVIEW Runtime version
Setting items	frequency, phase, repetition rate, pulse width, amplitude , amplification, gate position

Emergence of Elastic Softening Featuring Ultra-Slow Dynamics Around Magnetic Critical Endpoint in UCoAl

Masahito Yoshizawa, Yusei Shimizu, Yoshiki Nakanishi, Yoshiya Homma, Ai Nakamura, Fuminori Honda, Dai Aoki

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