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The Model 260 3-Axis Goniometer is constructed of hard-anodized aluminum and is used to hold crystals in the process of determining crystallographic orientation using either Laue back
reflection or optical orientation techniques. (See EMS Model 210 Optical Orientation Instrument). The integral track mount is designed to fit a 2.19” wide or narrower x-ray or optical track. There is +/-25˚ of rotation in two of the axes and a full 360° of rotation in the other. The Model 260 is
designed so that a 2” diameter crystal mounted on the goniometer with a 1
” high mounting block is 3.625 inches above the track. The P/N 50176- 61 riser can be used to raise the Model 260 by 1 inch when working with smaller crystals. The Model 260 can also be mounted on the following EMS equipment for subsequent processing:
Model 850 Wire Saw
Dimensions: 3.5” W x 3.5” D x 3.25” H Model 265 -
The Model 265 is a larger version of the Model 260 and is mounted on a 7” square flat base, which can be adapted for a wide range of applications. There is +⁄-25˚ of rotation in two of the axes and a full 360˚ of rotation in the other. The Model 265 is ideal for the
orientation and cutting of large crystals and can easily be adapted to existing equipment.
Dimensions: 7” (W) x 7”(D) x 5”(H)
Model 170 - Multi-Axis Lapping Fixture The Model 170 was designed in collaboration with Lawrence Livermore National Laboratory and Max Planck Institute for the precision orientation and lapping or polishing of single crystals. This design is based on the work of Mader et al at MPI and is capable of applying a controlled force to delicate samples. The advantage of the Model 170 is that it can be mounted directly on an x-ray track for Laue back reflection. Precision of 0.1˚ in orientation can be obtained by double exposure with 180˚ rotation of the fixture in the optional x-ray track mount.
Model 25015 - Lapping
and Polishing Fixture The Model 25015 is designed to complement the Model 250 2-Axis Goniometer and is used to lap or polish oriented crystals either by hand or on a rotating polishing wheel. The Model 250 Goniometer can be mounted on an x-ray track for orientation and then transferred directly into the Model 25015 for lapping or polishing. The Model 250 can also be
transferred to an EMS saw prior to using the Model 25010. The Model 25015 utilizes a counterbalanced center slide to completely offset the weight of the center slide and the goniometer and is capable of lapping or polishing oriented crystals within 0.25˚.
The Model 210 - Optical Orientation
Instrument The Model 210 Optical Orientation Instrument is
used to determine the orientation of a crystal or to align a crystal so that specifically oriented surfaces can be cut or polished. The Model 210 uses a laser beam that is reflected off a cleaved or preferentially etched crystal surface back onto a target that is perpendicular to the laser beam. Optical orientation is an orientation technique that can be used as an alternative to more hazardous and expensive x-ray techniques.
Ordering Crystal Orientation Equipment and Accessories Description
Model 250 - 2-axis Goniometer (include mounting blocks and orientation software)
Model 25002 - Track Mount (for 3.625” height) Model 25005 - Track Mount (for 4” height)
Model 25015 - Lapping & Polishing fixtures (used to hold Model 250 for Polishing)
Model 260 - 3-axis Goniometer 1” Riser for Model 260
Model 265 - 3-axis Goniometer Model 66005 - 2-axis Goniometer (used on Model 660)
Model 66011 - Track Mount (for 3.625” to 4” height) used to hold the Model 66005
Model 170 - Multi-axis Lapping Fixture (used to polish more than one sample)
Spare PartsDescription Set Screw A for Model 260 Set Screw B for Model 260 Set Screw C for Model 260 Set Screw D for Model 260 Brass Plug for Model 260
Adapter to hold Model 260 onto Model 660 Saw Cat. #
50176-50 50176-51 50176-52
50176-53 50176-60 50176-61 50176-65 50180-05
Model 17011 - Track Mount (for 3.625” height used on Model 170) 50176-71 Model 210 - Optical Orientation Instrument (includes laser w/o Goniometer or Track Mount)
Adapter to hold Model 250 onto Model 66007 (see Model 660 Saw) 50177-26 1” Stainless Steel Mounting Block (for use with Model 250, 66005) 50177-50 0.75” Stainless Steel Mounting Block (for use with Model 250, 66005)
0.5” Stainless Steel Mounting Block (for use with Model 250, 66005) 50177-52 0.37” Stainless Steel Mounting Block (for use with Model 250, 66005)