A temperature-modulated dilatometer by using a piezobender-based device

Abstract

We report a new design of temperature-modulated dilatometer, which obtains the linear thermal expansion coefficient by measuring the oscillating changes of the sample's length and temperature by a piezobender and a thermocouple, respectively. Using an iron-based superconductor KFe${}_2$As${}_2$ as an example, we show that this device is able to measure thin samples with high resolutions at low temperatures and high magnetic fields. Despite its incapability of giving absolute values, the new dilatometer provides a high-resolution method to study many important physical properties in condensed matter physics, such as thermal and quantum phase transitions, and vortex dynamics in the superconducting state. The prototype design of this device can be further improved in many aspects to meet particular requirements.

arXiv comment6 pages, 3 figures; An error has been found in the setup and eta now can be independently determined without normalization to the standard sample

References in corpus (20)

• Universally diverging Grueneisen parameter and the magnetocaloric effect close to quantum critical points
• First order superconducting phase transition in CeCoIn${}_5$
• Evidence of Strong Correlations and Coherence-Incoherence Crossover in the Iron Pnictide Superconductor KFe2As2
• Colossal magnetostriction and negative thermal expansion in the frustrated antiferromagnet ZnCr2Se4
• A versatile and compact capacitive dilatometer
• Towards the identification of a quantum critical line in the (p, B) phase diagram of CeCoIn5
• Diverging thermal expansion of the spin-ladder system (C${}_5$H${}_{12}$N)${}_2$CuBr${}_4$
• Thermal expansion and Grüneisen parameters of Ba(Fe1-xCox)2As2 - a thermodynamic quest for quantum criticality
• Dimensional crossover of quantum critical behavior in CeCoIn${}_5$
• Unified phase diagram for iron-based superconductors
• AC Elastocaloric effect as a probe for thermodynamic signatures of continuous phase transitions
• Sudden reversal in the pressure dependence of Tc in the iron-based superconductor CsFe2As2: A possible link between inelastic scattering and pairing symmetry
• Nematic Quantum Critical Fluctuations in BaFe${}_{2-x}$Ni${}_x$As${}_2$
• Zero-field Quantum Critical Point in CeCoIn${}_5$
• High-resolution thermal expansion measurements under Helium-gas pressure
• Thermodynamic Observation of a Vortex Melting Transition in the Fe-based Superconductor Ba0.5K0.5Fe2As2
• A uniaxial stress capacitive dilatometer for high-resolution thermal expansion and magnetostriction under multiextreme conditions
• Crystal-lattice coupling to the vortex-melting transition in YBa2Cu3O7-d
• Nonlinear uniaxial pressure dependence of $T_c$ in iron-based superconductors
• Miniature Dilatometer Based upon an AFM Piezocantilever

Cited by in corpus (2)

• Neutron-diffraction and linear {Grüneisen} parameter studies of magnetism in NdFe${}_2$Ga${}_8$
• Electronic Phase Propagation Speed in BaFe${}_2$As${}_2$ Revealed by Dilatometry