econds at a temperature at or about 293 degrees Kelvin, to about 1???106 centimeter-gram seconds at a temperature at or about 293 degrees Kelvin. [0694] Thus, by way of illustration and not limitation, one may use materials such as Alnicol (see page E-112 of the CRC handbook), which is an alloy containing nickel, aluminum, and other elements such as, e.g., cobalt and/or iron.