Issues with Galaxy S3, S4, Note 2 destroying or being unable to use SD-cards
Abruptly forcing your phone to shut-down (holding power button until forced shut-down, pulling battery, etc.) can cause a corrupt SD card on any device if it is currently reading/writing to the SD card. It is known that some Samsung devices try to read the SD card during some random times such as when the phone is starting up. Also running applications that are saved to the SD card and forcing a shutdown is asking for trouble. I'd always recommend shutting the phone down properly whenever possible to minimize these issues.