About

I‘am Dr. Robert Kuechler, Managing Director of a company that manufactures high-precision miniature capacitance dilatometer and scientist at the Max-Planck Institute for Chemical Physics of Solids in Germany.

Products

Mini-Dilatometer
Super compact high-resolution capacitance dilatometer

The great advantage of the new type of measuring cells is based on a unique combination of powerful design, production technology and high level of manufacturing quality.

Size and Dimensions
footprint: 14 mm × 15 mm; height: 16 mm; weight: 13 g

Absolute resolution
@ low Temperature (Kelvinox-Systems (0.01 K up to 6 K)): ΔL = 0.01 Å
@ PPMS ΔL = 0.1 Å

Range of operation
Temperature range: 10 mK < T < 320 K
Magnetic field range: At least up to 38 T (max. tested field)

Measurable sample size
footprint (max.): (2.3 mm × 6 mm) or Ø = 3.3 mm
height: Less than 1 mm up to 2.75 mm

Materials
Dilatometer-parts: copper beryllium
Insulating pieces; washers: vespel; sapphire

Options
Any Cryostat: Dilatometer + attachments
PPMS: Dilatometer (can be rotated) complete with PPMS-probe and cables + software

Article: Rev. Sci. Instrum. 88, 083903 (2017) Read more Close

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Standard-Dilatometer
Compact and miniaturized high resolution capacitance dilatometer

Innovative patent-pending production method allows for an unprecedented resolution in a dilatometer of this compact size.




Size and Dimensions
footprin: 20 mm × 26 mm; height: 34 mm; weight 45 g

Absolute resolution
@ low Temperature (Kelvinox-Systems (0.01 K up to 6 K)): ΔL = 0.02 Å
@ PPMS ΔL = 0.1 Å

Range of operation
Temperature range: 10 mK < T < 320 K
Magnetic field range: At least up to 30 T (max. tested field)

Measurable sample size
footprint (max.): (3.5 mm × 10 mm) or Ø = 5 mm
height: Less than 1 mm up to 5 mm

Materials
Dilatometer-parts: copper beryllium
Insulating pieces; washers: vespel; sapphire

Options
Any Cryostat: Dilatometer + attachments
PPMS: Dilatometer complete with PPMS-probe and cables + software

Article: Rev. Sci. Instrum. 83, 095102 (2012) Read more Close

Stress-Dilatometer
Uniaxial stress capacitance dilatometer for high-resolution thermal expansion and magnetostriction

Size and Dimensions
footprin: 20 mm × 26 mm;; height: 41 mm; weight 52 g

Absolute resolution
@ low Temperature (Kelvinox-Systems (0.01 K up to 6 K)): ΔL = 0.02 Å
@ PPMS ΔL = 0.1 Å

Range of operation
Temperature range: 10 mK < T < 320 K
Magnetic field range: At least up to 30 T (max. tested field)
Applied force: from 40 up to 75 N
max. uniaxial stress: 3 kbar for cuboid sample of (0.5 mm)2 cross section

Measurable sample size
footprint (max.): (3.5 mm × 10 mm) or Ø = 5 mm
height: Less than 1 mm up to 5 mm

Materials
Dilatometer-parts: copper beryllium
Insulating pieces; washers: vespel; sapphire

Options
Varity of Cryostats: Stress-dilatometer + attachments
PPMS: Dilatometer complete with PPMS-probe and cables + software

Article: Rev. Sci. Instrum. 87, 073903 (2016) Read more Close

Working environment

Our dilatometers can be used in a wide range of temperature. They were tested and operated down to extremely low temperature (10 mK). The maximal operation temperature is determined by the thermal capability of the insulating pieces of vespel and the used coaxial cables. So far, dilatometers were only tested at temperatures just above room temperature. To achieve the best possible results the dilatometers have to be operated in a steady flowing inert gas atmosphere, where the dielectric constant of the medium does not change with temperature (e.g. helium, nitrogen, clean and dry air, vacuum). The operation in flow cryostats or directly in cryogenic liquids (helium) is not recommended. Our dilatometers have been successfully operated in most commonly measurement systems, e.g. in the Quantum Design PPMS under helium atmosphere or in an Oxford Instruments Kelvinox dilution refrigerator under vacuum. For all these systems, we offer the matching accessories for suitable mounting.

Selected Applications
1. PPMS (Physical Property Measurement System by Quantum Design)
2. Kelvinox™ Dilution Refrigerator by Oxford Instruments
3. Exchange Gas cryostat

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Compact size Bridgman-type pressure cell

We developed a non-magnetic Bridgman-type pressure cell capable of pressures up to 11 GPa. The cell fits into the PPMS system of Quantum Design, but can also be used in any other cryogenic equipment offering a sample space of more than 26mm in diameter. Due to the use of non-magnetic materials our cell is ideally suited for experiments requiring high magnetic fields.


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Site Notice

Dr. Robert Kuechler
Frankenstraße 13
01309 Dresden (Germany)

Fon: +49 (0) 351 46 46 31 27
Fax: +49 (0) 351 46 46 31 26
E-mail: kuechler@dilatometer.info
VAT Number (USt.-IdNr.): DE285812663


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One of the organizers, Dr. Jeroen Custers and Dr. Franziska Weickert from Los Alamos National Laboratory discuss the benefits of dilatometry in Prague.


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Work

Scientist

Max Planck Institute for Chemical Physics of Solids (MPI CPFS), Germany

2002 ~ Current

Research associate

One of the world’s leading experts in the field of thermal expansion and magnetostriction measurements.

2005 ~ Current

Experience of many years in the development of high resolution capacitance dilatometers for measuring thermal expansion and magnetostriction

Own company

to manufacture the today’s best High-precision miniature capacitance dilatometer (Ref: Rev.Sci.Instr.), which can be used for several applications and in a wide temperature range (300 K down to less than 10 mK). The new scientific instrument fabricated by a patent-pended technology proves its value in an increasing number of international research labs.

2012 ~ Current

PRESS RELEASES

press release

Quantum Tricritical Points

     Press release (English)

September 20, 2017

press release

Change of perspective in the electronic landscape

     Press release (English)
     Press release (German)

June 02, 2014

Publications

S. Friedemann, W. Duncan, M. Hirschberger, T. Bauer, R. Küchler et al..

Quantum tricritical points in NbFe2

2017
Nature Physics, doi:10.1038/nphys4242

2017
Appl. Phys. Lett. 110, 071901

2014
Nature Materials 3909, 10.1038

cover story

2013
Science 89, 000222

2011
Phys. Rev. B 83, 099901

2010
J. Low Temp. Phys. 161

2009
Phys. Rev. Lett. 102, 066401

2007
Sci. Tech. Adv. Mater. 8, 428

2006
Phys. Rev. Lett. 96, 256403

2006
Physica B 378, 36

2006
Physica B 378, 98

2006
Physica B 378, 648

R. Kuechler, et al.

Thermal expansion of CeCu5.8Ag0.2

2005
Physica B 53, 359

2004
Phys. Rev. Lett. 93, 096402

O. Stockert, E. Faulhaber, G. Zwicknagl, N. Stusser, H. Jeevan, M. Deppe, R. Borth, R. Kuechler et al.

Nature of the A phase in CeCu2Si2

2004
Phys. Rev. Lett. 92, 136401

Contact

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