Studying Phase Transition With a Strain Gage - PhysLab

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Studying Phase Transition With a Strain Gage

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Student Manual

Many physical substances undergo phase transitions when subject to changes in environmental parameters. The transition of ice into water and water into steam are familiar examples. Similarly, chromium undergoes a phase transition at a specific temperature, called the N´eel temperature changing its magnetic order from the anti-ferromagnetic to the para-magnet state. This magnetic reordering is accompanied by a change in volume. In other words, the phase transition is a magneto-elastic phenomenon. In this experiment, we study the phase transition of chromium by directly measuring the volume change. Several important thermodynamical concepts will also be navigated.

Software Code codes
Sample Results Voltage Vs Temperature
Voltage Vs No. of samples
Hardware Manual Precision Instrumentation Amplifier AD624
Experiment Code 2.7
Version 15 Aug 2011

Further Readings and References

  • Mathematical Methods
    , Zeemansky and Dittman, .
  • Investigation of thermal hysteresis near the Neel transition in chromium
    Journal of Physics. F. Metal physics, I.S. Williams, R. Street, 2551, (1980).
  • Thermal Expansion of Chromium Single Crystals at the Néel Temperature
    The Physics Society of Japan, Takehiko Matsumoto, Tadayasu Mitsui, (1969).
  • Calorimetric studies of the order of magnetic phase transitions in Cr and some Cr alloys at the Neel point
    Journal of Physics.F Metal physics, G Benediktssont, H U Astromt, K V Rao, 5, (1975).

Pictorial Procedure

bridge chromium 1 DSCN0111 DSCN0113 setup
Lab 2 | Tags: statistical mechanics
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    • Fast Optics
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    • Chasing Cosmic Ray Muons at Physlab
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    • Research Stories
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    • Class Demonstrations
    • PhysDiary
    • Health and Safety
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    • Research Themes
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    • Research Stories
    • Physics WorldCup
      • International Young Physicists’ Tournament (IYPT) 2019
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    • Hunerkada
    • Grants
    • Theses and Reports
    • Scientific Publications
    • Invited Talks (Selected)
  • Outreach
    • Media
      • Lectures, Podcasts and Interviews
      • Videobytes
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      • Testimonials
    • The Scientific Mind Through the Eyes of a Physics Experimenter
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      • First Lahore 2012
      • Second Sukkur 2013
      • Third Lahore 2014
      • Fourth Lahore 2016
    • Labview Workshop 2016
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        (PIEAS) 2019 (Final Phase)
      • Pakistan Institute of Engineering and Applied Sciences
        (PIEAS) 2019 (Phase 2)
      • Pakistan Institute of Engineering and Applied Sciences
        (PIEAS) 2018 (Phase 1)
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      • Habib University 2014
      • Preston University 2013
      • Ghulam Ishaque Khan Institute of
        Engineering Sciences and Technology 2011
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    • Abdus Salam Memorial Lecture Series
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