The 300 kV JEOL 3010 offers greater specimen penetration than 200kV instruments, with good spatial resolution and probe forming capabilities. A flexible condenser system permits CBED, LACBED, and imaging with hollow cone and Koehler illumination. In addition to a Gatan Multiscan camera, a Gatan Orius 833is available for acquiring diffractions patterns without a beam stop and for recording experiments at video rates. Specific capabilities include: imaging at 2.1Å and ±40° tilt during simultaneous heating; high-resolution imaging at 1.7 Å and ±10° tilt during simultaneous heating; and high magnification Lorentz and Foucault imaging of magnetic samples. Various heating, cryo, mechanical testing and electrical biasing holders are available. The 3010 is the microscope most used for static liquid cell experiments.
Microscopists planning to use a heating specimen holder should consult the heating holder guidelines.
Heating holder guidelines
If you plan to use heating holders for in-situ experiments, we require your careful review and compliance with the following guidelines.
- Include in your proposal target temperature and all phase diagrams of material with those of the tantalum furnaces and tantalum and/or molybdenum washers. Eutectic melting or bonding to the furnace body can occur at much lower temperatures than expected.
- Holders are individually marked with the maximum temperature displayed on the specimen rod. Do not exceed this marked maximum temperature. It is easy to overshoot target temperature, so approach with caution.
- Pre-schedule time for technical training and assistance by NCEM staff, especially if you are an infrequent or first-time user.
- Heating holders are extremely delicate and must be loaded and unloaded with great care. Please seek help if you are unclear about any steps in the procedure.
- The water recirculator must always be turned on for target temperatures above 500C.
- If specimens are not self supporting, copper grids are generally adequate to 500C. For target temperatures above 500C, molybdenum grids are required. Gatan G-1 high temperature epoxy remains intact at temperatures in excess of 1000C.
- The tantalum hex screw ($200 ea.) and tantalum washers ($20 ea.) are expensive to replace. If you drop these accessories on the floor, please find them immediately or ask someone for help in locating them.
- Use of heating holders for vacuum heat treatment of specimens is strictly forbidden.
|Accel. voltage:||300 kV|
|Point-to-point resolution, wide gap||2.1 Å|
|Point-to-point resolution, narrow gap||1.7 Å|
|Single-tilt heating to 1300° C||±40°|
|Double-tilt heating to 1000°C||±40°/±40°|
|Single-tilt electrical biasing||±40°|
|LN cold stage||±40°|