Standard Design Diamond Anvils

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Standard Design Diamond Anvils

Thick girdle and large table to withstand the hightest pressures

Standard design anvils are made from rough diamonds. They are polished according to the (100)-crystal orientation for the highest strength.
Optimum mechanical strength

See available options

SKU: Standard Design

For more info, quotation or call: Contact us

Description

The table below provides you with all the different diamond anvils of this type. You can narrow down your choice using the filters below.
If you are in doubt about the meaning of each filter, more explanation is available in each of the tabs above.

Product Number	Diameter (mm)	Material	Application
P01938	3.25	Diamond Type IIas	Optical Raman ⋅ X-Ray ⋅ FT-IR
P01006	3.25	Diamond Type la	Optical ⋅ X-Ray
P01939	3.50	Diamond Type IIas	Optical Raman ⋅ X-Ray ⋅ FT-IR
P01007	3.50	Diamond Type la	Optical ⋅ X-Ray
P01937	3.00	Diamond Type IIas	Optical Raman ⋅ X-Ray ⋅ FT-IR
P01935	2.50	Diamond Type IIas	Optical Raman ⋅ X-Ray ⋅ FT-IR
P01005	3.00	Diamond Type la	Optical ⋅ X-Ray
P01003	2.50	Diamond Type la	Optical ⋅ X-Ray
P01940	3.75	Diamond Type IIas	Optical Raman ⋅ X-Ray ⋅ FT-IR
P01936	2.75	Diamond Type IIas	Optical Raman ⋅ X-Ray ⋅ FT-IR
P01008	3.75	Diamond Type la	Optical ⋅ X-Ray
P01004	2.75	Diamond Type la	Optical ⋅ X-Ray
P01941	4.00	Diamond Type IIas	Optical Raman ⋅ X-Ray ⋅ FT-IR
P01006 ULF	3.25	Diamond Type la	Optical Raman ⋅ X-Ray
P01043	3.25	Diamond Type IIac	Optical ⋅ FT-IR
P01008 ULF	3.75	Diamond Type la	Optical Raman ⋅ X-Ray
P01045	3.75	Diamond Type IIac	Optical ⋅ FT-IR
P01005 ULF	3.00	Diamond Type la	Optical Raman ⋅ X-Ray
P01042	3.00	Diamond Type IIac	Optical ⋅ FT-IR
P01003 ULF	2.50	Diamond Type la	Optical Raman ⋅ X-Ray
P01040	2.50	Diamond Type IIac	Optical ⋅ FT-IR
P01004 ULF	2.75	Diamond Type la	Optical Raman ⋅ X-Ray
P01041	2.75	Diamond Type IIac	Optical ⋅ FT-IR
P01007 ULF	3.50	Diamond Type la	Optical Raman ⋅ X-Ray
P01044	3.50	Diamond Type IIac	Optical ⋅ FT-IR
P01046	4.00	Diamond Type IIac	Optical ⋅ FT-IR

Diameter

We offer a large range of diameters ranging from 2.50 mm up to 4.75 mm typically.

Generally thick girdle and large table are more suited to withstand the highest pressures.

All dimensions are exact and consistent.

Optimum mechanical strength.

Material

Diamond Type Ia	~2×10³ ppm of nitrogen – yellow
Diamond Type Ia – Raman low / ultra-low fluorescence	~2×10³ ppm of nitrogen – white to light yellow
Diamond Type IIac	~1 ppm of nitrogen – white to light brown
Diamond Type IIas – Raman ultra-low fluorescence & ultra-low birefringence	~1 ppm of nitrogen – white

Almax easyLab is committed to its policy of continuous improvement. Specifications may change without notice. easyLab and Diacell are registered trademarks of Almax easyLab.

FT-IR Spectrum

FLUORESCENCE

Almax easyLab can select its diamonds for low fluorescence. Standard measurements include laser excitation at 532 nm and covers fluorescence background in the range of 542 to 608 nm (Raman shifts between 1000 and 3000 cm-1). Measurements for different wavelength ranges can be made available on request. In special cases customers can select their own diamonds for low fluorescence using their own measurement set-up.

Almax easyLab classifies its diamonds with respect to fluorescence according to the following criteria:

Type Ia UV low fluorescence – Checked with a UV lamp

Type Ia Raman low fluorescence – The intensity of the two-phonon Raman transition at 2664 cm-1 is at least 1.25 times the intensity of the background fluorescence of diamond

Type Ia Raman ultra-low fluorescence – The intensity of the two-phonon Raman transition at 2664 cm-1 is at least 2 times the intensity of the background fluorescence of diamond

Type IIac Raman ultra-low fluorescence

Type IIas Raman ultra-low fluorescence – The intensity of the two-phonon Raman transition at 2664 cm-1 is at least 5 times the intensity of the background fluorescence of diamond

BIREFRINGENCE

All diamonds to be used for anvil manufacture are examined under a polarising microscope for birefringence. Diamonds with significant birefringence discontinuity, typical of inclusions, etc. are rejected. In addition diamonds can be selected for ultralow birefringence. Total birefringence is measured using crossed polarisers, a waveplate and matched to specifications. Normally:

Low birefringence <0.0001
Ultra low birefringence <0.00005

Application

These anvils can be used in conjunctions with various designs of diamond anvil cells and for both X-Ray or Optical spectroscopy.

If you have a particular design of a diamond anvil cell and would like to use this particular design of diamonds, you can consult us for our expert advise on diameter and optical properties choice best suited for your requirements.

Support Plate

Newly designed or existing DACs (retrofit):
In most cases, the WC seat can be adapted to the dimension requirements of your DAC. Consult us.

Options and Accessories

Accessories

	Diacell easyGlue The Diacell easyGlue, an universal jig for mounting anvils to seats of DACs using epoxy resins. Product number : [A74600]
	Glue low temperature Two components, thermally conductive epoxy(low coefficient of thermal expansion) Product number : [P00534]
	Glue room temperature Single component heat cured. Adhesive with high shear and peel strength. Product number : [P00979]
	Glue high temperature Two components, high purity alumina based adhesive Product number : [P00946]

Options

Patterned Anvils

Diamond anvils with deposited gold patterns for electrical transport measurements in a DAC. There are two configurations readily available. Please consult the Patterning section of the website.

Perforated Anvils

Perforated anvils
Partially perforated anvils from the culet side
Partially perforated anvils from the table side

Repairwork

At Almax easylab, we repair your damaged diamond anvils. How much we polish away depends on the damage (because of microcracks it is not possible to predict how much material we need to remove to clean the culet) or on the request of the customer. Please consult the Repairwork section of the website.

Prototypes

We also provide service to the CVD diamond growth scientists. Almax easyLab prepares HPHT & CVD diamond substrates for CVD diamond growth experiments as well as lasercut and polish as grown freestanding CVD diamonds for prototype work.

FAQs

How to chose the culet size ?

The culet size is to be decided as a function of the maximum pressure or the sample size. Typical sample space is given by the gasket thickness (typically 0.10 mm or less) and the central hole diameter (typically 30-50% culet size)

Pmax (GPa) (*)	< 5	5-100	> 100
Culet size (mm)	> 1.00	1 -0.20	< 0.20 mm, bevels up to 0.30 mm at 8°

(*) The Pmax values are only indicative. The maximum pressure achievable with a DAC is influenced by many others experimental parameters, like the gasket characteristics (material, thickness and hole size) or the pressure transmitting medium.

How the culet looks like?

Culet flat	Culet with single bevel	Culet with double bevel

Examples of typical requests for quote:

Diamond anvil, type Ia, Standard design, 16-sided, 3.75 mm, culet of 0.10 mm, bevels up to 0.30 at 8°, (100)-oriented, Raman low fluorescence, low birefringence.

Article nr.: P01008
Quantity: 6 anvils.

Diamond anvil, type Ia, Standard design, 16-sided, 3.25 mm, culet of 0.30 mm, (100)-oriented.

Article nr.: P01006
Quantity: 4 anvils.

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