Ultrasonic Pulse-Echo Measurement System

Ritec™ RAM-5000 Mark VI Advanced Ultrasonic Measurement System is a complete ultrasonic system designed to measure acoustic properties (bulk sound velocity and attenuation) of materials. The system realizes the pulse-echo principle when a short radiofrequency acoustic burst transmits by an ultrasonic transducer into the sample, propagates through the material, reflects from the opposite end and received by the same transducer. Measurements of the time delay between reflected echoes and their amplitudes yield sound wave velocity and attenuation, respectively. The Ritec™ system provides a unique possibility to make reproducible measurements using very short bursts; therefore relatively thin samples can be evaluated. High power pulse excitations up to 5 kW together with a unique tracking receiver enable one to measure materials with high attenuation like composites or ferroelectrics and multiferroics near the phase transition temperatures. We use this unique measurement system in connection with Oxford™ continuous-flow cryostat for investigation of acoustical and structural properties of new single crystals for SAW applications, ferroelectrics and multiferroics (in both single crystalline- and ceramics forms).

Features:

• Frequency range 250 kHz to 40 MHz
• On/off Ratio > 140 dB
• Maximum Gated Amplifier Output 5 kW
• Receiver Gain 22 to 100 dB
• Accuracy:
• Sound velocity (phase angle) 0.03 degrees
• Attenuation (amplitudes) 0.01 dB
  

• Temperature range:
• 4.2 K – 380 K (Cryostat system)

Contact:

Dr. Andrei Sotnikov
IFW Dresden e.V.
'Magnetic and acoustic resonances' (Dept. 15)
Surface Dynamics Group
P.O.Box 270116
D-01171 Dresden, Germany
phone: ++49/351/4659 689
fax: ++49/351/4659 440
e-mail: a.sotnikov + @ifw-dresden.de (Sorry, but we try to prevent automatic SPAM)