Nagel Rice & Mazie, whose record of winning multimillion-dollar personal injury and class action cases has been matched by few New Jersey firms, is splitting in half because of personality clashes and disagreements about compensation among the name partners.

The firm’s most recent star litigator, David Mazie, announced Jan. 10 that he and seven other lawyers at the Roseland, N.J., firm had formed Mazie Slater Katz & Freeman.